generated: '2026-07-21'
method: searched
source: https://docs.tachyus.com/changelog.html
docs: https://docs.tachyus.com/changelog.html
scheme: semver
format: keep-a-changelog
current_version: 2.4.0
entries:
  - version: Unreleased
    date: null
    added:
      - Probabilistic P10/P50/P90 forecast outputs
      - Dashboard PDF export with custom header/footer
  - version: 2.4.0
    date: '2026-03-15'
    added:
      - Linked charts for synchronized X-axis zoom/pan
      - KPI trend indicator
      - Surface colorscale editor
    changed:
      - Tooltip values now respect Y-axis number format settings
    fixed:
      - Chart widgets handle missing daily records correctly
      - Table widget CSV export includes column headers
  - version: 2.3.1
    date: '2026-02-01'
    fixed:
      - Race condition causing stale widget data after date range changes
      - Surface upload failures for large ZMAP+ files
  - version: 2.3.0
    date: '2026-01-10'
    added:
      - Waterflood pattern analysis in Reservoir Models
      - REST API DELETE endpoint
    changed:
      - Dashboard auto-refresh uses WebSocket push
      - API rate limit increased to 300 req/min
    deprecated:
      - /api/v0/ endpoints
  - version: 2.2.0
    date: '2025-11-20'
    added:
      - Data-driven forecasting via type curve matching
      - GeoTIFF surface format support
      - Configurable dashboard auto-refresh intervals
    fixed:
      - Incorrect cumulative calculations for wells with non-contiguous history
  - version: 2.1.0
    date: '2025-09-05'
    added:
      - Normalization options in Production Analytics
      - Conditional formatting for Table widgets
    changed:
      - DCA auto-fit speed improved by 60%
  - version: 2.0.0
    date: '2025-06-01'
    added:
      - Dashboard redesign with 12-column grid
      - KPI and mini-widget types
      - Combo charts
      - REST API v1
    removed:
      - Legacy dashboard builder