3.15.90 - February 16, 2015
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* NEW FEATURE: Added support for Fischer and Bronstein clocks
  (Developer: Sahil Sareen, Reviewer : Michael Catanzaro)
* Add copy of PGN spec to the repo (Michael Catanzaro)
* Improving the precision of chess-clock (Sahil Sareen)
* Miscellaneous code improvements (Sahil Sareen, Michael Catanzaro)
* Updated translations (Muhammet Kara)