# [0.5.11] - 2026-09-02

### Changed
- CLI: Set `load` command exit status to failed if any of the loaded files fails to load.
- HTTP server: fixes repeated URL query arguments support like `default-graph-uri`.


# [0.5.10] - 2026-08-30

### Changed
- Turtle-like languages: allow blank node ids with multiple consecutive dots (these are allowed in the Turtle grammar).
- SPARQL: optimize properly joins nested inside other joins.
  This might significantly affect the speed of some queries.
- SPARQL: fixes the type inference one on the `IF` function and equality simplification on literals.
- SPARQL: properly large strings effective boolean value to `true` (and not `false`...).
- SPARQL: fixes `CLEAR NAMED` on the RocksDB storage when there are more than 100k named graphs.
- SPARQL: fixes validation of `xsd:dateTime` and `xsd:time`: times like `24:01:01` where wrongly considered valid.
- HTTP endpoint: fix HTTP status code returned on `/store` POST requests.
- HTTP endpoint: make `PUT` requests on `/store` database changes properly atomic


# [0.5.9] - 2026-06-17

### Changed
- `Store`: make `Transaction` and `BulkLoader` `Send` and `Sync`.


# [0.5.8] - 2026-04-28

### Added
- HTTP server: `/sparql` path that serves both SPARQL queries and updates.
- GeoSPARQL: a significant set of new functions.

### Changed
- RocksDB backend: fixes some transactions where reading-your-own-writes was not working correctly.


# [0.5.7] - 2026-04-19

### Changed
- JSON-LD: Fixes conflicts between `@type` and `@language` in property-scoped contexts.
- Bump RocksDB to 11.0.4


# [0.5.6] - 2026-03-14

### Changed
- SPARQL: DESCRIBE: do not describe values of blank node "variables".
- SPARQL: Fixes some bug in the parser related to spacing.
- SPARQL: Fixes evaluation of SERVICE clauses with unsupported custom functions.
- JSON-LD: fixes serialization of relative IRIs looking like keywords.
- RocksDB: reduce the number of copies in read operations.


# [0.5.5] - 2026-02-14

### Added
- JSON-LD: JSON-LD 1.1 is now implemented and enabled by default.
- JavaScript: the `parse` method that allows to parse a RDF file from a buffer, an iterator of buffers or and async iterator of buffers (including streams). 
- `oxrdf`: the `Dataset.quads_for_pattern` method allowing to iterate only on quads matching a given pattern.
- `oxjsonld`: The `JsonLdParser.with_processing_mode` method to select the JSON-LD 1.0 or 1.1 processing mode.

### Changed
- RocksDB fixes a panic when `ulimit -n` is set to a very large number.


# [0.5.4] - 2026-01-24

### Added
- RDF/XML: support of the current 1.2 draft behind the `rdf-12` cargo feature (directional language strings and triple terms).
- RDFC 1.0 canonicalization algorithm on the `Graph` and `Dataset` containers.

### Changed
- `oxrdf`: the default `Unstable` canonicalization algorithm has been changed for a variant of RDFC 1.0. It seems much faster in a lot of cases.
- HTTP: always set `sd:endpoint` in the served service description (the value is guessed from the incoming request values).
- `spareval`: make `QueryTripleIter::new` public.
- JSON-LD: lots of internal changes in preparation of JSON-LD 1.1 support (might affect some edge cases of 1.0 parsing).


# [0.5.3] - 2025-12-19

### Added
- SPARQL 1.2: support `VERSION` declaration. 

### Changed
- SPARQL: fixes parsing of `HAVING` when there are multiple conditions.
- SPARQL: compute ordering values for `ORDER BY` only once (allows `ORDER BY RAND()` to work properly).


# [0.5.2] - 2025-10-25

### Changed
- SPARQL: fixes evaluation of RDF 1.2 annotation syntax (e.g. `SELECT * WHERE { ?s ?p ?o {| ?p2 ?o |}`).
- Bump RocksDB to 10.7.5 (requires a C++ 20 compiler).
- Built Linux Python wheels now require Glibc 2.28.


# [0.5.1] - 2025-10-11

## Added
- `spargebra`: `standard-unicode-escaping` feature that unescape `\u` and `\U` sequences everywhere in the query, following to the SPARQL specification.
- `spareval`: `QueryEvaluator.prepare` method that allows to prepare a query then execute it.
  Injecting variable bindings and customizing the query dataset is possible on the prepared query.
  `FROM` and `FROM NAMED` clauses are taken into account by this API, opposite to the older `QueryEvaluator.execute` method.
- `spareval`: `QueryEvaluator.prepare_delete_insert` that allows evaluating easily SPARQL UPDATE DELETE/INSERT operations.
- CLI: `oxigraph load` now has a `--non-atomic` option to load data in a non-atomic way. Allows compaction to happen in the background during loading.

### Changed
- NTriples/Turtle: fixes parsing of language tags with numbers like `es-419`.
- SPARQL: fixes evaluation of `SELECT * FROM NAMED <ex:> WHERE { GRAPH ?g {} }`: all named graphs of the underlying store returned and not only `ex:`.
- SPARQL: make parsing fail on duplicated variable names in `VALUES` like `VALUES (?a ?a) {}`.
- `spareval`: `QueryEvaluator.execute` and `QueryEvaluator.explain` are deprecated. Please use `QueryEvaluator.prepare` instead.
- bulk loader: avoid duplicated each file. It reduces the storage footprint by half in some cases.
- bulk loader: improve cleanup on failure and avoid some cases where files where left on disk.

# [0.5.0] - 2025-09-13

_This release is dedicated to the memory of [Gregg Kellogg](https://greggkellogg.net/foaf), author of multiple specifications implemented by Oxigraph and great inspiration._

### Changed
- SPARQL: support double negation `!!` when SPARQL 1.2 is enabled.
- SPARQL: allow triple terms in the subject position in more places.
- `spargeo`: change API to drop dependency on `spareval` and `oxigraph.


# [0.5.0-beta.5] - 2025-09-07

### Added
- `spareval`: a `CancellationToken` to easily cancel a running SPARQL query.
- CLI: `--timeout-s` option to the `query` command to set a timeout for the query.
- `oxttl` and `oxrdfio`: `split_file_for_parallel_parsing` method to enable easier NTriples and NQuads parallel parsing from a file.
- `oxigraph`: `parallel_load_from_file` and `parallel_load_from_slice` methods to load RDF data from a file or a slice in parallel.

### Changed
- JSON-LD: fixes parsing of aliased `@type`
- `oxigraph`: `bulk_loader` method now takes a `mut` reference and there is a new `commit` method that is required to save the loaded data.
- CLI and Python bindings: bulk loading data from a file and a buffer (in Python) is now done in parallel.
- Bump `rand` to 0.9 and `getrandom` to 0.3.


# [0.5.0-beta.4] - 2025-08-23

### Added
- `spareval`: expose `QueryEvaluator::evaluate_expression` to evaluate expressions

### Changed
- Oxigraph: `Transaction` has now stronger lifetime bounds to ensure operations on a transaction are not running longer than the transaction itself. 
  It also affects types like `QuadIter` or `GraphNameIter` that now carry a lifetime.
- SPARQL: raise an error when blank nodes are shared between different INSERT DATA statements (follows SPARQL spec).
- SPARQL: Makes single DELETE/INSERT and LOAD statements slightly faster by not indexing the changes.


# [0.5.0-beta.3] - 2025-08-15

### Changed
- Rust: bump MSRV to 1.87.
- RocksDB: bump to 10.5.1.
- Turtle: use the longest possible prefix during serialization.
- Improved error when opening an old RocksDB database in read-only
- `spareval`: Add a lifetime to `QueryResults`
- `spareval`: Allow `QueryableDataset` to be bounded by a lifetime. 
- `spareval`: `QueryableDataset` is now implemented by `&Dataset` and not by `Dataset` (allows avoiding a bunch of copies).


# [0.5.0-beta.2] - 2025-08-07

### Added
- `oxrdfio`: `RdfParser.split_slice_for_parallel_parsing` to enable easier NTriples and NQuads parallel parsing.
- `oxigraph`: `(BulkLoader|Store|Transaction).load_from_slice` to load serialized RDF data from a slice.
- `oxigraph`: `SparqlEvaluator` fluent API to customize more easily SPARQL operations and prepare them.
  The `Store.query` and `Store.update` methods are deprecated and `QueryOptions` and `UpdateOptions` types are removed.
- SPARQL: support for `xsd:gYear`, `xsd:gMonth`, `xsd:gDay`, `xsd:gMonthDay` and `xsd:gYearMonth` cast functions.
- Python: add `prefixes` and `custom_aggregate_functions` options to `Store.query` and `Store.update` methods.

### Removed
- `oxigraph`: Remove `Service`, `DefaultService`, `QueryResults` and `QuerySolutionIter` types in favor of `spargebra` ones.

### Changed
- Turtle: fixes parsing of blank nodes at the end of the files.
- Turtle/NTriples: fail on `"foo"^^rdf:langString` and `"foo"^^rdf:dirLangString`.
- RocksDB: enable async I/O when RocksDB is built with it.
- `spareval`: `Service` and `DefaultService` traits now take parameters by reference.
- `oxigraph`: the `EvaluationError` type is now replaced by the `QueryEvaluationError` and `UpdateEvaluationError` types.


# [0.5.0-beta.1] - 2025-06-20

### Added
- Support for current W3C working drafts RDF 1.2 and SPARQL 1.2, hidden behind the `rdf-12` or `sparql-12` features.
  RDF 1.2 includes triple terms using a slightly different syntax as RDF-star
  and directional language strings using the new `Literal.direction` attribute.
- `oxrdf`: basic `serde` support behind the `serde` feature.
- `spargebra`: a `SparqlParser` API allowing setting default prefixes.
- `oxigraph`: the `Store.start_transaction` method that returns a new `Transaction` object.
  transactions can be committed with the `commit` method or rolled back by just dropping the `Transaction` object.
- Python: the `lenient` option to the `parse` and `load` method to skip some validations.

### Removed
- RDF-star support is now dropped in favor of RDF 1.2.
  The `rdf-star` feature is not available anymore but triple terms are supported using `rdf-12`.
  RDF 1.2 does not support triple terms in the subject position anymore.
  Existing databases are automatically migrated on the first opening with Oxigraph 0.5 to keep most SPARQL queries working.
  However, serialization in N-Triples/Turtle/... has changed.
- All deprecated Rust methods in the 0.4.x releases.
- Rust: support for Rust versions before 1.85.
- RocksDB: support of versions before 9.10.
- `oxrdf`: the `Subject` enum is now merged into `NamedOrBlankNode`.
- `spargebra`: `GroundSubject` is now merged into `NamedNode`.
- `spareval`: `ExpressionSubject` is now merged into `NamedOrBlankNode`.
- `oxigraph`: `Store.transaction` is replaced by `Store.start_transaction`. 
- Python: `pyoxigraph.__package__` and `pyoxigraph.__author__` constants.

### Changed
- `oxrdf`: deprecate `Literal::is_plain` (not defined anymore in RDF 1.1 and 1.2).
- `oxrdf`: deprecate `Literal::destruct` (no added value compared to regular assessors).
- `oxttl`/`oxrdfxml`/`oxrdfio`: rename `unchecked()` to `lenient()`.
- `oxigraph` now relies on `oxhttp` 0.3. Some optional feature names have changed.
- `oxigraph`: the SERVICE setup API has changed. The `ServiceHandler` trait now defines a single service with a given name
   whereas the `DefaultServiceHandler` trait set a default behavior for other service URLs.
- RDF/XML: keep namespaces in `rdf:parseType="Literal"` output.
- RocksDB transactions do not rely anymore on `TransactionDB` but on the new [`WriteBatchWithIndex`](https://github.com/facebook/rocksdb/wiki/Write-Batch-With-Index) API.
  It means that some write-write conflicts are not detected anymore (e.g., if a graph is dropped by a transaction while a concurrent one adds a triple to the same graph)
  but significantly increases update speed and enables things like efficient `Store.clear` implementation.
- Bulk loading is now atomic: if it fails no triple will be added to the database.


## [0.4.11] - 2025-05-21

### Changed
- Bumps to RocksDB 10.3.0 and fixes a compilation issue with GCC 13+.


## [0.4.10] - 2025-05-15

### Added
- `oxjsonld` crate with JSON-LD 1.0 parsing and serialization.
  It is exposed in all APIs (Rust, Python, JS, CLI and HTTP server).
  A faster [Streaming JSON-LD](https://www.w3.org/TR/json-ld11-streaming/) parsing is also available if the `http://www.w3.org/ns/json-ld#streaming` profile is enabled.
- `oxigraph` binary is now distributed on Pypi.

## Changed
- Linux pre-built binaries now require at least Ubuntu 22.04.
- CLI: `convert` method `lenient` option now works properly.
- RDF/XML: reduces copies inside the parser.
- RDF/XML: do not serialize triples with reserved syntax terms.
- Turtle: improve some error messages.
- N-Triples: improve error recovery by always restarting at the next line.
- Upgrades to RocksDB 10.2.1.


## [0.4.9] - 2025-03-09

### Changed
- SPARQL: Fixes a bug that made `GROUP_CONCAT(..., SEPARATOR="...")` always assume `DISTINCT`.
- `oxrdfxml`: Fixes `TokioAsyncWriterRdfXmlSerializer` name.


## [0.4.8] - 2025-02-14

### Changed
- SPARQL: Fixes a bug in `sameTerm` implementation on `xsd:decimal`.
- Turtle: fixes a parsing ambiguity when a file ends with an integer then a concatenated dot eg. `11.`.


## [0.4.7] - 2025-01-19

### Changed
- SPARQL: `GRAPH ?g {}` now properly returns all named graph in the queried dataset.
- SPARQL: `ASK { OPTIONAL { X }}` now properly returns true even if `X` raises an error.
- `sparopt`: breaking 0.2 release because of the introduction of a `Graph` algebra node to support `GRAPH ?g {}` syntax.


## [0.4.6] - 2025-01-11

### Added
- `spareval` crate that provides a stand-alone SPARQL evaluator without dependency on Oxigraph storage systems.
- Rust/Python: the API now allows to substitute variables with value before evaluating a query.
  Substitution follows  [RDF-dev SEP-0007](https://github.com/w3c/sparql-dev/blob/main/SEP/SEP-0007/sep-0007.md).

### Changed
- Bump RocksDB to 9.10.0.


## [0.4.5] - 2024-12-21

### Added
- SPARQL: support for the 'q' regular expression option.

### Changed
- Turtle: do not buffer everything if there is no line jump in the file.
- RDF/XML: fixes decoding of escaped whitespaces.
- Bump RocksDB to 9.9.3.
- Allow compilation on zkvm by removing the dependency on `std::time` for this platform.


## [0.4.4] - 2024-11-21

### Added
- Integrates geosparql in the CLI Docker image and the JS bindings.
- Python: support for 3.13 free-threaded builds.


## [0.4.3] - 2024-11-07

### Changed
- Fixes segfaults on `Store` drop when using the memory backend on large datasets (drop was doing too many recursive call leading to a stack overflow).
- Upgrades RocksDB to 9.7.4.
- Allows `thiserror` 2.0 and `geo` 0.29.


## [0.4.2] - 2024-10-31

### Added
- `spargeo` crate providing [GeoSPARQL simple features query functions](https://docs.ogc.org/is/22-047r1/22-047r1.html#req_geometry-topology-extension_sf-query-functions).
  They are enabled by default in Oxigraph CLI and Oxigraph Python bindings.
- Turtle, TriG and RDF/XML: allow to set a base IRI during serialization.
- Python: exposes prefixes and base IRI after parsing.
- Python: allows to give to `Literal` constructor a `int`, `float` or `bool`.

### Changed
- SPARQL XML query results: escape whitespaces at the extremities of values to make sure they are not trimmed.
- Turtle: fixes support of empty local name.
- N3: properly inject the base IRI before parsing.
- RDF/XML do not return invalid prefixes after parsing.
- RDF/XML: properly deduplicate prefixes during serialization and fixes prefix conflicts.


## [0.4.1] - 2024-10-13

### Added
- JS: add `default_graph` and `named_graphs` query options to set the default and named graphs.
- HTTP server: return SPARQL service description on GET requests.

### Changed
- NTriples/NQuads error recovery: do not consider the predicate as a possible subject if the subject is invalid.
- Turtle: prevent line jump in single quoted string (but not in unchecked/lenient mode).
- Turtle: forbid invalid \u+123 escape sequences.
- RDF/XML: only ignore possible literal values composed of whitespaces if an other object value is present.
- SPARQL: fixes regex function evaluation when the regex is not set to a literal. 
- SPARQL: ignore errors in joins if the other side of the join returns no results (the output would be no results anyway if the errors are fixed).
- SPARQL: make ASK return true if the inner query is returning a valid tuple even if the inner query is also returning errors (fixing these errors would not change the ASK output).
- SPARQL optimizer: do not attempt to optimize SERVICE (keep them, do not push filter in them...). This was leading to a lot of subtle behavior changes.
- oxRDF parser: allow spaces between literal value and langtag/datatype, unicode escapes in URIs.


## [0.4.0] - 2024-09-22

### Changed
- SPARQL: fixes evaluation of `GRAPH ?g { ?s <p1>/<p2> ?o }` property paths with `?g` and `?s` unbound and `?o` bound.


## [0.4.0-rc.2] - 2024-09-15

### Added
- Rust: `Triple::from_str` and `Quad::from_str`.

### Changed
- SPARQL: fixes evaluation of `GRAPH ?g { ?s !(...) ?o }` property paths with `?g` and `?s` unbound and `?o` bound.
- NTriples/NQuads: properly mandate that lines must contain at most a single triple/quad.
- Turtle-like formats: do not allow the empty blank node identifier.
- Rust: Big renaming in parsers and serializers to get an hopefully nicer API:
  - Use `Parser` suffix instead of `Reader` for parsers.
  - Use `Writer` suffix instead of `Serializer` for serializers.
  - Rename `FromRead` to `Reader`, `FromTokioAsyncRead` to `TokioAsyncReader`, `FromSlice` to `Slice`, `ToWrite` to `Writer` and `ToTokioAsyncWrite` to `TokioAsyncWriter`.
  - Rename `read_next` to `parse_next`.
  - Rename `from_read` to `for_reader`, `to_write` to `for_writer`, `from_tokio_async_read` to `for_tokio_async_reader`, `to_tokio_async_write` to `for_tokio_async_writer`, `from_slice` to `for_slice`.
- CLI: Allows to set `default-graph-uri` query argument even if the `--union-default-graph` CLI option is set.


## [0.4.0-rc.1] - 2024-08-25

### Added
- CLI: `union-default-graph` option to the `serve` and `query` commands to use by default the union of all graphs as the default graph in SPARQL queries.

### Changed
- RocksDB build: link with the atomic library on armv5te and riscv64gc
- CLI build: do not generate man pages for help commands.


## [0.4.0-alpha.8] - 2024-08-22

### Added
- oxttl, oxrdfxml, sparesults and oxrdfio: new `parse_slice` method to parse a byte slice directly.
- oxttl N-Triples, N-Quads and Turtle: new `split_slice_for_parallel_parsing` method that splits a slice into chunks that can be parsed in parallel.
- Python: support for custom SPARQL functions.
- CLI: man pages and shell autocompletion files are now automatically generated on build.

### Removed
- The storage "secondary" mode. It was quite buggy, especially with RocksDB 9. If you need it, please reach out.

### Changed
- Upgrades Rust MSV to 1.75.
- Bumps RocksDB to 9.5.2.
- IRI: ipvFuture are now allowed and some characters are now disallowed in some places to follow RFC 3987.
- sparesults: `parse_` and `serialize_` functions now take the parser/serializer by value but the parsers and serializers are now `Clone`.
- Release builds abort instead of unwind on panics.
- Turtle-like languages: escaped UTF-16 surrogates are now supported in unchecked/lenient mode.
- SPARQL: fixes parsing of `CONSTRUCT` queries when a dot directly follows a semicolon.
- SPARQL: avoids to return duplicated triples in `CONSTRUCT` response (the deduplication is only partial, some duplicates may still be returned).
- JS: better TypeScript types now written by hand.
- JS: allow any `Iterator` implementation in `Store` constructor.
- Python: `Store.bulk_load` now properly uses the bulk loader.
- Python: improves the way the GIL is released. Might fix some weird bugs.
- HTTP: increases max SPARQL body size to 128MB.


## [0.4.0-alpha.7] - 2024-05-18

### Added
- JS: `Store.query` has now a `results_format` option to select the format in which the results should be returned.
  When enabled the return type will be a string.

### Changed
- Default in memory storage is now a brand new implementation based on hash sets and linked list. See [description in the wiki](https://github.com/oxigraph/oxigraph/wiki/Architecture#how-is-the-in-memory-storage-working).
  It provides proper transaction rollbacks and allows concurrent reads while a write transaction is happening.
  It is now used when a `Store` is created without an underlying storage directory.
- SPARQL: `DESCRIBE` now implements [Concise Bounded Description](https://www.w3.org/submissions/CBD/).
- SPARQL: avoids join reordering inside of `SERVICE` calls.
- SPARQL: fixes parsing of `DESCRIBE` query when there is a space between the IRI after `FROM` and the `WHERE` keyword.
- Uses the "fx hash" from Firefox and rustc in the hash maps to make hashing faster.
- RDF/XML: if `unchecked` is enabled, `rdf:ID` distinctness won't be validated.
- Python: uses Python 0.21 bindings.
- JS: The `load` and `dump` method second argument is now an object with options.
  The old API is kept for backward compatibility and prints warnings.
- CLI: removes dependencies on escargot.
- CLI: uses `@zazuko/yasqui` instead of `@triply/yasqui` and vendors the JS and CSS in the built binary.


## [0.4.0-alpha.6] - 2024-03-25

### Changed
- Fixes compatibility with OxIRI 0.2.3.


## [0.4.0-alpha.5] - 2024-03-23

### Added
- Python: `Dataset` class

### Changed
- Rust: `Dataset::canonicalize` and `Graph::canonicalize` takes for input a `CanonicalizationAlgorithm` to set which algorithm to use.
- Upgrades RocksDB to 9.0.0
- JS: Drops NodeJS 12-16 and older web browsers (Edge before Chromium...) support.


## [0.4.0-alpha.4] - 2024-03-07

### Added
- Rust: `From<spargebra::Update` on `Update`.
- `sparesults`: Tokio Async readers for SPARQL query results (XML, JSON and TSV).
- `oxrdf`: `Term::from_terms` constructor.
- JS: options to set query and update base IRI and query union default graph.

## Changed
- Uses RocksDB atomic multi-columns flush.
- Rust: RocksDB is optional but enabled by default.
- Upgrades RocksDB to 8.11.3.
- Rust: `oxigraph` crate has been moved to `lib/oxigraph`.
- Rust: `QueryResults::write` returns the `Write` impl and not `()`.
- Rust: use `thierror` for errors.
- Rust: rename `oxrdfio::{Parse,Syntax}Error` to `oxrdfio::Rdf{Parse,Syntax}Error`,
  `oxrdfxml::{Parse,Syntax}Error` to `oxrdfxml::RdfXml{Parse,Syntax}Error`,
  `oxttl::{Parse,Syntax}Error` to `oxttl::Turtle{Parse,Syntax}Error`,
  `sparesults::{Parse,Syntax}Error` to `sparesults::QueryResults{Parse,Syntax}Error` and
  `spargebra::SyntaxError` to `spargebra::SparqlSyntaxError`.


## [0.4.0-alpha.3] - 2024-01-25

### Added
- `oxttl`: expose base IRIs.
- `oxttl`: allows to inject prefixes for serialization.
- `oxrdf`: `vocab::geosparql::WKT_LITERAL`.

### Changed
- Turtle: Fixes parsing bug with escaped dot at the end of local name.
- `oxttl`: Changes `prefixes` getter return type.
- JS: simplify build.
- Python: uses rustls by default all platforms that are not Windows/macOS/iOS/WASM.
- Strips debug info of the Rust std library in release build.


## [0.4.0-alpha.2] - 2024-01-08

### Added
- i686 linux support

### Changed
- Docker: fixes Docker image Glib version error.
- Docker: tags now use semver e.g. `0.3.22` and not `v0.3.22`. Preversions are also not tagged `latest` anymore.
- Python: `QuerySolution` is now thread safe.


## [0.4.0-alpha.1] - 2024-01-03

### Added
- `sparopt` crate: A new still quite naive query optimizer.
- `oxttl` crate: A N-Triples/N-Quads/Turtle/TriG/N3 parser and serializer compatible with Tokio.
- `oxrdfxml` crate: A RDF/XML parser and serializer compatible with Tokio.
- `oxrdfio` crate: A stand-alone crate with oxigraph I/O related APIs.
- Rust: SPARQL results I/O is now exposed in the `oxigraph` crate (`oxigraph::sparql::results` module).
- Rust: It is now possible to dynamically link rocksdb with the `rocksdb-pkg-config` feature.
- Python: error location is now included in some `SyntaxError` exceptions.
- Python: the file type can be guessed from the file path extension during parsing and serialization.
- Python: the serialization method returns a `bytes` value if no output-related argument is given.
- Python: SPARQL query results I/O is now exposed (`parse_query_results` function and `.serialize` method).
- Python: `RdfFormat` and `QueryResultsFormat` enum to encode supported formats.
- CLI: a `convert` command to convert RDF file between different formats.

### Removed
- Rust: automated flush at the end of serialization. This should be done explicitly now.
- oxsdatatypes: Deprecated methods.
- Python: 3.7 and Musl linux 1.1 support.
- Python: `GraphName.value`.

### Changed
- SPARQL: a digit after `.` is now required for `xsd:decimal`.
- SPARQL: calendar subtraction returns `xsd:dayTimeDuration` and not `xsd:duration`.
- SPARQL: Unicode escapes (`\u` and `\U`) are now only supported in IRIs and strings and not everywhere.
- Literal serialization now produces canonical N-Triples according to the RDF 1.2 and RDF Dataset Canonicalization drafts
- Rust: MSRV is now 1.70.
- Rust Makes `GraphName` implement `Default`.
- Rust: `wasm32-unknown-unknown` does not assumes JS platform by default. Enable the `js` feature for that.
- Rust: Parsers take `Read` and not `BufRead` for input.
- Rust: `GraphFormat` and `DatasetFormat` have been merged into `RdfFormat`.
- Rust: `GraphParser` and `DatasetParser` have been merged into `RdfParser`.
- Rust: `GraphSerializer` and `DatasetSerializer` have been merged into `RdfSerializer`.
- Rust: query results are now `Send` and `Sync`.
- Rust: `Store.load_graph` and `Store.load_dataset` have been merged into a `load_from_read` method.
- Rust: `Store.dump_graph` and `Store.dump_dataset` have been renamed to `dump_graph_to_write` and `dump_to_write`.
- Rust: `BulkLoader.set_*` methods have been renamed to `BulkLoader.with_*`.
- oxsdatatypes: pass by-values instead of by-reference parameters when relevant.
- oxsdatatypes: error types have been redesigned.
- oxsdatatypes: return an error when building not serializable duration (year-month and day-time of opposite signs).
- sparesults: renames some methods to move closer to the new oxrdfio crate.
- Python: raise `OSError` instead of `IOError` on OS errors.
- Python: the `mime_type` parameter have been renamed to `format`.
- Python: boolean SPARQL results are now encoded with a `QueryBoolean` class and not a simple `bool`.
- Python: a `path` parameter has been added to all I/O method to read from a file.
  The existing `input` parameter now consider `str` values to be a serialization to parse.
- JS: the `mime_type` parameter have been renamed to `format`.
- CLI: the `oxigraph_server` binary has been renamed to `oxigraph`.
- CLI: the `--location` argument is now part of sub-commands where it is relevant.
  `oxigraph_server --location foo serve` is not possible anymore.
  One need to write `oxigraph serve --location foo`.
- CLI: is is now possible to upload gzip encoded files to the HTTP API with the `Content-Encoding: gzip` header.


## [0.3.22] - 2023-11-29

### Changed
- Allows to compile with more recent `bindgen` and `cc`
- Fixes compatibility with `spin_no_std` feature of `lazy_static`


## [0.3.21] - 2023-11-29

### Changed
- Bulk loader: do not fail when loading empty files.
- Python: fixes source distribution.
- Upgrades RocksDB to 7.8.1.


## [0.3.20] - 2023-10-23

### Changed
- SPARQL: fixes `STR` evaluation on small IRI (less than 16 bytes) that was broken.
- SPARQL update: fixes `WHERE` clause evaluation that was generating too many solutions in some cases.
- Upgrades RocksDB to 8.7.1.


## [0.3.19] - 2023-08-18

### Added
- Python: allows to give `pathlib.Path` argument when a path is expected.
- Cargo.toml: add a documentation field to link to docs.rs documentation.

### Changed
- Upgrades RocksDB to 8.3.2.


## [0.3.18] - 2023-06-13

### Changed
- SPARQL: fixes evaluation of `||` when all alternatives are `false`. The results must be `false` and not an error.
- SPARQL: `xsd:duration` it is now possible to properly parse and serialize all numbers that can be internally represented by the encoding used by Oxigraph.
- Python: fixes `Store.contains_named_graph` return type annotation.


## [0.3.17] - 2023-06-11

### Added
- SPARQL: support of `xsd:duration` to SPARQL `SUM` aggregate function.
- Server: support for systemd "notify" service option.
- Server: uses the target graph name as base URI when `POST`ing and `PUT`ing data.
- Python: `Store.contains_named_graph` method.

### Changed
- SPARQL: `xsd:decimal` multiplication and division have been improved to avoid raising overflow because of internal operations in some cases.
- SPARQL: `xsd:decimal` parser is now able to properly parse all numbers that can be internally represented by the encoding used by Oxigraph.
- SPARQL: `xsd:decimal` avoids bad overflow on unary `-` operator.
- SPARQL: reduces loss of precision when casting `xsd:decimal` to `xsd:float` or `xsd:double`.
- SPARQL: improves a bit the AST in case of a lot of `&&`, `||` or `IN` operators.
- SPARQL: fixes some optimization bugs around `MINUS` inside `OPTIONAL`.
- SPARQL: makes for loop join choice instead of hash join a bit more aggressive.
- Avoids random crashes when building RocksDB for aarch64.
- Python: fixes support of text I/O with not-ASCII char.
- Python: upgrades PyO3 to 0.19.
- `spargebra`: `GroundTermPattern::Triple` is now properly gated behind the `"rdf-star"` feature.
- `oxsdatatypes`: Deprecates `is_naan` that is renamed to `is_nan` (we like bread but prefer numbers).
- `oxsdatatypes`: Adds `checked_neg` methods on numerical types.
- `oxsdatatypes`: Drops `nom` dependency and uses hand-written parsers instead.


## [0.3.16] - 2023-04-29

### Changed
- Fixes flush and compaction on the GSPO index. It might improve Oxigraph performances and storage space.
- SPARQL: fixes some optimizations in presence quoted triples with nested variables.
- SPARQL profiler: adds EXISTS operation to the explanation and profiling tree.
- Upgrades RocksDB to 8.1.1.


## [0.3.15] - 2023-04-18

### Added
- Rust: adds `Store.explain_query_opt` method that allows to get an explanation of the evaluation with profiling statistics.
- Server: adds explanation and profiling to the `query` action (`--explain`, `--explain-file` and `--stats` options).
- Python: implements the `__match_args__` attribute on terms (literals, triples, quads...) to allow `match` operator usage.
- Server: adds the `--cors` option to the `serve` actions to allow cross-origin resource sharing.

### Changed
- SPARQL: fixes evaluation of empty aggregation without GROUP BY: aggregators now return their default value (0 for COUNT...) and not an empty row.
- SPARQL: fixes parsing of decimal with more than 19 digits in the fractional part.
- Server docker image: switch to the smaller distroless base images.
- Bulk loader: by default only uses 2 concurrent threads and around 2GB of RAM.
- Server load: progress is now printed to stderr much more regularly.


## [0.3.14] - 2023-03-19

### Added
- Read only and secondary RocksDB storage. Allows to open the data as read-only or to follow a primary instance.
- Server: adds multiple commands:
  - `serve-secondary` and `serve-read-only` to serve the HTTP server in secondary and read-only modes.
  - `dump` to dump the database content to a file.
  - `query` and `update` to execute SPARQL query and updates.
  - `backup` to do a database backup.
  - `optimize` to optimize the database storage.
- Server: adds `format` and `graph` options to the `load` command in order to select the loaded data format and the target graph.
- Python: `Store.extend` and `Store.bulk_extend` methods.
- Python: allows to pickle basic data model classes.

### Changed
- Upgrades RocksDB to 8.0.0.
- Server: listening to localhost now properly listen to both IPv4 and IPv6.
- RDF/XML and XML parser results: avoid an ever growing buffer.
- JSON SPARQL results: allows the "head" key to be at the end of the document.
- TSV SPARQL results: properly quote `\t` and print trailing line jumps.
- `Term::from_str`: fixes parsing of blank nodes in object position of quoted triples.
- `QuerySolution`: implements `Eq` and `Debug`.
- JS: Reduces WASM build size.
- OxRDF: fixes `Graph` and `Dataset` serialization to output proper N-Triples and N-Quads.


## [0.3.13] - 2023-02-23

### Changed
- Fixes serialization of times with a decimal number of seconds lower than 10 (now `01:01:01.01` and not `01:01:1.01`).
- Turtle and TriG: fixes parsing for prefixes named after keywords (`prefix`, `base`, `graph`, `true` and `false`).


## [0.3.12] - 2023-02-18

### Added
- `From<NamedOrBlankNode>` for `GraphName` (and similarly for `*Ref`).
- Prebuilt Python wheels for Linux with [musl libc](https://www.musl-libc.org/).

### Changed
- Fixes TriG serialization.
- `QueryDataset` is now properly exposed in the public Rust API.


## [0.3.11] - 2023-01-18

### Added
- SPARQL: Implementation of the `LATERAL` operator following [SPARQL SEP-0006](https://github.com/w3c/sparql-12/blob/main/SEP/SEP-0006/sep-0006.md).
  Support is behind the `sep-0006` feature in `spargebra` and enabled by default in Oxigraph.
- SPARQL: Implementation of the `ADJUST` function following [SPARQL SEP-0002](https://github.com/w3c/sparql-12/blob/main/SEP/SEP-0002/sep-0002.md).
  Support is behind the `sep-0002` feature in `spargebra` and enabled by default in Oxigraph.
- Rust: There is a new stand-alone crate `oxsdatatypes` implementing Rust structs for the common XML schema datatypes.
  It was part of the Oxigraph crate and it might be useful for other SPARQL or XPath implementations.
- Rust: The `oxigraph` crate can now be compiled for `wasm32-wasi` with the basic in-memory backend but without RocksDB.

### Changed
- SPARQL: The property path evaluator was sometime emitting duplicates when evaluating disjunctive patterns (`a|b`). It is now fixed.
- SPARQL: If written explicitly in the SPARQL query, the regular expressions are now compiled once and not for each row.
- SPARQL: Property path evaluation with both start and end variables bound has been optimized.
- SPARQL: Casts to `xsd:decimal` from `xsd:float` and `xsd:double` now properly fails on overflow instead of overflowing the internal 128-bits representation.
  This follows [XPath casting rules](https://www.w3.org/TR/xpath-functions-31/#casting-to-decimal).
- Rust: The minimal supported Rust version is set at 1.60 and enforced using the CI.
- Python: Local builds will now target the specific Python version instead of [abi3](https://docs.python.org/3/c-api/stable.html).
  abi3 wheels are still released on Pypi alongside new Python-version specific builds for Linux+GNU.
- SPARQL: Fixes a panic when the estimated upper bound of the results size was overflowing a `usize`.
- Python: Uses `typing.IO` in Python stubs instead of narrower interfaces.
- Upgrades RocksDB to 7.9.2, `quick-xml` to 0.27 and `pyo3` to 0.18.


## [0.3.10] - 2022-12-21

### Added
- SPARQL: Property path with unbound graph are now evaluated.
  For example, `SELECT * WHERE { GRAPH ?g { ?s ex:p+ ?o } }` now works.
- SPARQL: The query optimizer is now fuzzed for better testing.

### Changed
- SPARQL: Evaluation of zero-length paths with both start and end unbounded now return only terms defined in the current graph but not terms only defined in the query.
  For example, in `SELECT * WHERE { VALUES ?s { 1 } { ?s ex:p? ?o } }` the literal `1` won't be returned anymore if not in the queried graph.
- Python: type stubs are now compatible with Python 3.7 and Mypy strict mode.
- RDF/XML: allows entities declared using other entities.
- Upgrades `quick-xml` to 0.26.


## [0.3.9] - 2022-12-07

### Added
- Server: The `/store` endpoints now has a `no_transaction` HTTP option for `POST` and `PUT` request to get better performances at the cost of transactional guarantees.
- Server: The `/store` endpoints now has a `lenient` HTTP option for `POST` and `PUT` request to ignore syntax errors (requires the  `no_transaction` option).
- Server: allows path that are not valid UTF-8 in file path CLI arguments.
- Rust: `From<spargebra::Query>` to `oxigraph::Query` (thanks to @hobofan).

### Changed
- SPARQL: `NOW()` function properly returns the current time and not 1970-01-01
- SPARQL: fixes serialization of SPARQL queries (property path and STRSTARTS function).
- SPARQL: slightly optimize aggregates by avoiding an unneeded projection.
- SPARQL: the parser now cleanly fails if invalid `VALUES` clauses are provided.
- SPARQL: In DELETE/INSERT UPDATE the currently written values can't be read anymore ("Halloween problem").
- `oxrdf`: makes Clippy run without warnings when `rdf-star` is disable.
- Python: makes type annotations compatible with Python 3.7.
- Python: makes sure the parameter default value is always included in the type annotation.


## [0.3.8] - 2022-10-22

### Changed
- Python: avoid uploading debug wheels to pypi.


## [0.3.7] - 2022-10-22

### Added
- Python type stubs are now generated and distributed alongside wheels.

### Changed
- SPARQL: Fixes evaluation of sub queries in which some variables might not be always bound.
- Python: Uses https://pyoxigraph.readthedocs.io instead of https://oxigraph.org/pyoxigraph/ to store pyoxigraph documentation.
- Server: Migration to Clap v4. Slight changes to the console textual outputs.


## [0.3.6] - 2022-08-16

### Changed
- Server: Makes sure body is always sent for all HTTP response codes that are not explicitly to not do that according to the HTTP specification.
- Python: Adds support of reading from `io.TextIOBase`.


## [0.3.5] - 2022-08-02

### Changed
- Fixes a bug in the SPARQL parser with nested anonymous blank nodes (`[]`).
- Migrates the Python documentation skin to [Furo](https://pradyunsg.me/furo/).


## [0.3.4] - 2022-07-17

### Changed
- Allows multiple value to be given to `oxigraph_server` `--file` parameter.
- Limits parallelism of `oxigraph_server` file loader to avoid stack overflows.


## [0.3.3] - 2022-06-12

### Added
- `QueryResults::with_http_redirection_limit` that allows to set a limit on the number of HTTP redirection followed (`0` by default).

### Changed
- Fixes a bug in SPARQL parser that was always enabling the `SILENT` option of the `SERVICE` operator.
- Allows unknown keys in the objects present in the SPARQL JSON query results. It allows to parse e.g. Virtuoso query results.
- Allows `"typed-literal"` as an alias of `"literal"` in SPARQL JSON query results.
- Improves the HTTP client error reporting: no silent failures on 4XX and 5XX responses.
- Upgrades RocksDB to 7.3.1.
- Upgrades quick-xml to 0.23.


## [0.3.2] - 2022-04-24

### Changed
- Fixes a bug in the server bulk loader that crashed on very small files.
- Upgrades RocksDB to v7.1.
- Removes some dead code in the bulk loader.


## [0.3.1] - 2022-04-02

### Changed
- The default git branch is now `main` and not `master` (thanks to @nyurik).
- Upgrades RocksDB to v7.0.4.
- Limits the number of bulk loader threads to at most 4 (allows bigger BTree chunks and a better data layout).
- Limits the number of files opened by RocksDB to the soft file descriptor limit minus 48.


## [0.3.0] - 2022-03-19

### Changed
- Fixes compilation on ARM.
- Moves some lints from errors to warnings in order to avoid compilation failures on different Rust versions.


## [0.3.0-rc.1] - 2022-03-14

### Added
- The bulk loader now checks available memory and tries to increase its batch size to make use of it.
- The Bulk loader provides now a `--lenient` option to keep loading a file even if invalid data is found (works only with N-Triples and N-Quads).
  This behavior can be customised in the Rust API using the `BulkLoader::on_parse_error` method.

### Changed
- Rocksdb has been upgrade to 7.0.2. It now requires a C++17 compatible compiler. This required dropping support of macOS 10.9 to 10.13.

## [0.3.0-beta.4] - 2022-02-27

### Added
- JS: Oxigraph NPM package is now also supporting web browsers and WebPack.
- JS: RDF term related classes now overrides the `toString` method.
- Python: It is now possible to directly give a file path to the
  `parse`, `serialize`, `Store.load`, `Store.bulk_load` and `Store.dump` functions.
- Python: New `Store.clear_graph`, `Store.clear`, `Store.optimize` and `Store.flush` methods.

### Removed
- `sophia_api` traits implementation following a request of Sophia maintainer.

### Changed
- SPARQL: fixes evaluation of SPARQL queries with no results but an `ORDER BY` clause.
  There should be no group in the output instead of one empty group.
  This behavior has been changed following [this discussion](https://github.com/w3c/rdf-tests/pull/61).
- SPARQL: fixes SPARQL-star evaluation of nested triples with both variables and constants.
- SPARQL: if results are sorted, literals are now ordered by value, then datatype, then language tag.
  This ordering is considered as "implementation defined" by the SPARQL specification and is very likely to change in the future.
- Python: all costly methods now release the python GIL allowing multithreaded usages of pyoxigraph.
- Rust: SPARQL results writer now flushes the buffer at the end of the results writes. This makes their API less error-prone.
- Rust: the bulk loader API has been rewritten to allow hooking a progress indicator and set parallelism limit.
- Server: it is now possible to bulk load gzipped files.

## [0.3.0-beta.3] - 2022-02-02

### Changed
- Fixes a bug in the `bulk_load_dataset` method that was creating an invalid database.
- Server: Takes into account also URL query parameters if the send SPARQL request body is using form-urlencoded.
- Upgrades RocksDB to v0.28.2.
- Generate clean python sdist files compiling Oxigraph from scratch with the proper `Cargo.lock`.
- Do not push beta releases to homebrew and python stable documentation.
- Moves RocksDB binding directory to `oxrocksdb-sys`.

## [0.3.0-beta.2] - 2022-01-29

### Changed
- Fixes release on crates.io of the RocksDB bindings.

## [0.3.0-beta.1] - 2022-01-29

### Added
- [RDF-star](https://w3c.github.io/rdf-star/cg-spec/2021-12-17.html) support. `Triple` is now a possible `Term`. Serialization formats and SPARQL support have been updated to match the [latest version of the specification draft](https://w3c.github.io/rdf-star/cg-spec/2021-12-17.html).
- Fast data bulk load with the `Store` `bulk_load_dataset` and `bulk_load_graph` methods and a special command-line option of the server.
- It is now possible to quickly backup the database using the `backup` method.
- Rust: `*Syntax::from_extension` to easy guess a graph/dataset/sparql result format from a file extension.
- Rust: Custom SPARQL functions are now supported using `QueryOptions::with_custom_function`.
- Rust: Simple in-memory graph (`Graph`) and dataset (`Dataset`) data structures with canonicalization.
- Nightly build of the server binary and docker image, and of pyoxigraph wheels.
- `Store` operations are now transactional using the "repeatable read" isolation level:
  the store only exposes changes that have been "committed" (i.e. no partial writes) and the exposed state does not change for the complete duration of a read operation (e.g. a SPARQL query) or a read/write operation (e.g. a SPARQL update).
  the `Store` `transaction` method now allows to do read/write transactions.
  -`RDF-star <https://w3c.github.io/rdf-star/cg-spec/2021-12-17.html>`_ is now supported (including serialization formats and SPARQL-star). :py:class:`.Triple` can now be used in :py:attr:`.Triple.object`, :py:attr:`.Triple.object`, :py:attr:`.Quad.subject` and :py:attr:`.Quad.object`.

### Changed
- SPARQL: It is now possible to compare `rdf:langString` literals with the same language tag.
- SPARQL: The parser now validates more carefully the inputs following the SPARQL specification and test suite.
- SPARQL: Variable scoping was buggy with "FILTER EXISTS". It is now fixed.
- Rust: RDF model, SPARQL parser and SPARQL result parsers have been moved to stand-alone reusable libraries.
- Rust: HTTPS is not supported by default with the `http_client` option. You need to enable the `native-tls` or the `rustls` feature of the `oxhttp` crate to enable a TLS layer.
- Rust: The error types have been cleaned.
  Most of the `Store` methods now return a `StorageError` that is more descriptive than the previous `std::io::Error`.
  The new error type all implements `Into<std::io::Error>` for easy conversion.
- Rust: There is now a `Subject` struct that is the union of `NamedNode`, `BlankNode` and `Triple`.
  It is The used type of the `subject` field of the `Triple` and `Quad` structs.
- Rust: The SPARQL algebra is not anymore publicly exposed in the `oxigraph` crate. The new `oxalgebra` crate exposes it.
- Rust: `UpdateOptions` API have been rewritten. It can now be built using `From<QueryOptions>` or `Default`.
- Server: The command-line API has been redesign. See the [server README](server/README.md) for more information.
- Server: The HTTP implementation is now provided by [`oxhttp`](https://github.com/oxigraph/oxhttp).
- Server: The HTTP response bodies are now generated on the fly instead of being buffered.
- Python: The `SledStore` and `MemoryStore` classes have been removed in favor of the `Store` class.
- JS: The `MemoryStore` class has been renamed to `Store`.
- JS: The [RDF/JS `DataFactory` interface](http://rdf.js.org/data-model-spec/#datafactory-interface) is now implemented by the `oxigraph` module itself and the `MemoryStore.dataFactory` property has been removed.
- The implementation of SPARQL evaluation has been improved for better performances (especially joins).
- The TLS implementation used in SPARQL HTTP calls is now [rustls](https://github.com/rustls/rustls) and not [native-tls](https://github.com/sfackler/rust-native-tls). The host system certificate registry is still used.
- Spargebra: The basic RDF terms are now the ones of the `oxrdf` crate.

### Removed
- `SledStore` and `MemoryStore`. There is only the `RocksDbStore` anymore that is renamed to `Store`.
- `oxigraph_wikibase` is now stored in [its own repository](https://github.com/oxigraph/oxigraph-wikibase).
- Rust: `From` implementations between `oxigraph` terms and `rio_api` terms.

Many thanks to [Thad Guidry](https://github.com/thadguidry), [James Overton](https://github.com/jamesaoverton) and [Jeremiah](https://github.com/jeremiahpslewis) who sponsored the project during the development of this version.


## [0.2.5] - 2021-07-11

### Added
- [SPARQL 1.1 Query Results JSON Format](https://www.w3.org/TR/sparql11-results-json/) parser.
- Python wheels for macOS are now universal2 binaries.

### Changed
- The `Cargo.lock` file is now provided with releases to avoid compilation failures because of changes in dependencies.
- Uses clap instead of argh for the server arguments parsing.
- Upgrades PyO3 to v0.14.


## [0.2.4] - 2021-04-28

### Changed
- The HTTP server allows to query the union of all graphs using the `union-default-graph` query parameter and to use the union graph for update `WHERE` clauses using the `using-union-graph` parameter.
- Exposes Sled flush operation (useful for platforms without auto-flush like Windows or Android).
- Fixes a possible out of bound panic in SPARQL query evaluation.
- Upgrades RocksDB to 6.17.3.


## [0.2.3] - 2021-04-11

### Changed
- Server: Fixes HTTP content negotiation (charset constraints, failure to properly handle `*/*`...).
- Makes Clippy 1.51 happy.


## [0.2.2] - 2021-03-18

### Added
- Support of XML entities to the RDF/XML parser

### Changed
- Serve: Allows unsupported query parameters in HTTP SPARQL requests.
- Fixes WASM compilation bug and optimises WASM release packages.
- Fixes named graph creation inside of a SledStore transaction.


## [0.2.1] - 2021-01-16

### Changed
- Fixes `pyoxigraph` build by enforcing a given `maturin` version.
- Adds code to build Python wheels for MacOS and Windows.


## [0.2.0] - 2021-01-07

### Added
- [SPARQL 1.1 Update](https://www.w3.org/TR/sparql11-update/) support for Rust, Python and JavaScript. All store-like classes now provide an `update` method.
- [SPARQL 1.1 Query Results CSV and TSV Formats](https://www.w3.org/TR/sparql11-results-csv-tsv/) serializers and TSV format parser.
- [SPARQL 1.1 Graph Store HTTP Protocol](https://www.w3.org/TR/sparql11-http-rdf-update/) partial support in `oxigraph_server`. This protocol is accessible under the `/store` path.
- The SPARQL Query and Update algebra is now public.
- The stores are now "graph aware" i.e. it is possible to create and keep empty named graphs.
- A simple built-in HTTP client. In the Rust library, is disabled by default behind the `http_client` feature. It powers SPARQL federation and SPARQL UPDATE `LOAD` operations.
- `std::str::FromStr` implementations to `NamedNode`, `BlankNode`, `Literal`, `Term` and `Variable` allowing to easily parse Turtle/SPARQL serialization of these terms.
- Optional Sled storage for `oxigraph_server`.

### Removed
- The `default_graph_uris` and `named_graph_uris` parameters from `pyoxigraph` `query` methods.
- Python 3.5 support.
- `(Memory|RocksDB|Sled)Store::prepare_query` methods. It is possible to cache SPARQL query parsing using the `Query::parse` function and give the parsed query to the `query` method.

### Changed
- Loading data into `oxigraph_server` is now possible using `/store` and not anymore using `/`.
  For example, you should use now `curl -f -X POST -H 'Content-Type:application/n-quads' --data-binary "@MY_FILE.nq" http://localhost:7878/store` to add the N-Quads file MY_FILE.nt to the server dataset.
- Fixes evaluation of `MONTH()` and `DAY()` functions on the `xsd:date` values.
- `Variable::new` now validates the variable name.
- `(Memory|RocksDB|Sled)Store::query` does not have an option parameter anymore. There is now a new `query_opt` method that allows giving options.
- `xsd:boolean` SPARQL function now properly follows XPath specification.
- Fixes SPARQL `DESCRIBE` evaluation.

### Disk data format

The disk data format has been changed between Oxigraph 0.1 (version 0) and Oxigraph 0.2 (version 1). Data is automatically migrated from the version 0 format to the version 1 format when opened with Oxigraph 0.2.


## [0.1.1] - 2020-08-14

### Added
- The `"sophia"` feature implementing the [`sophia_api`](https://docs.rs/sophia_api/) traits on Oxigraph terms and stores.
- Explicit types for quads iterators returned by stores.

### Changed
- `QueryOptions::with_default_graph` now takes an `impl Into<GraphName>` instead of an `impl Into<NamedNode>`.
- `QueryOptions::with_named_graph` now takes an `impl Into<NamedOrBlankNode>` instead of an `impl Into<NamedNode>`.
- `pyoxigraph` `query` methods now takes two new parameters, `default_graph` and `named_graphs`. `default_graph_uris` and `named_graph_uris` parameters are deprecated.
- Fixes a bug in `xsd:gYear` parsing.


## [0.1.0] - 2020-08-09

### Added
- `QueryOptions` now allows settings the query dataset graph URIs (the SPARQL protocol `default-graph-uri` and `named-graph-uri` parameters).
- `pyoxigraph` store `query` methods allows to provide the dataset graph URIs. It also provides an option to use all graph names as the default graph.
- "default graph as union option" now works with FROM NAMED.
- `pyoxigraph` now exposes and documents `Variable`, `QuerySolution`, `QuerySolutions` and `QueryTriples`


## [0.1.0-rc.1] - 2020-08-08

### Added
- `oxigraph` Rust library with SPARQL 1.1 query support and memory, Sled and RocksDB stores.
- `oxigraph_server` standalone SPARQL server.
- `oxigraph_wikibase` standalone SPARQL server loading data from a Wikibase instance.
- `pyoxigraph` Python library based on Oxigraph.
- `oxigraph` NodeJS library based on Oxigraph.