2.1.0:
----------------------
 * Raise requirement
 * Add strict types
 * Re-/Move UTF-8 lang file to plugin root for Styx 5.0
 * Use native htmlspecialchars()

2.0.0:
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 * Reflect Styx 5 core textarea name changes to drop into
 * Raises requirements

1.00:
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 * Add conceptional root namespace to error exception handling for consistency
 * Raises requirements
 * Remove legacy and XHTML11
 * Remove PHP UNIT tests while mostly for legacy

0.25:
----

 * Modernize strike button to <del> (html5)

0.24:
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 * In absence of constructor parameters - remove parentheses for consistency

0.23:
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 * Cleanup and consistency

0.22:
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 * Complete refactoring of serendipity_event_typesetbuttons