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2018-02-03	v0.31
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* Added support for arithmetic to timecode executable

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2016-07-16	v0.30
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* Fixed dropframe calculations and changed algorithm [RT Bug #91181]
* Changed $DEFAULT_FPS from 30 to 29.97
* Added strftime(3) style formatting via to_string(), which now accepts an optional format string
* Added package variable $DEFAULT_TO_STRING_FORMAT that allows one to set to_string's default format
* Added support for relational operators
* Added timecode conversion executable
