1.15:
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 * Fix possible PHP 7 warning for parameter must implement Countable

1.14:
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 * Fix "Illegal string offset 'from'" error
 * Use lang API - extends required Serendipity version to 1.6

1.13:
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 * Add lang <de>
 * Add new option for case bottom, closing a div class with certain templates

1.12:
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 * Add ability for "plaintext" markup

1.11:
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 * Add support for putting nuggets in RSS feeds