Log Message:
Updte ruby-pygments.rb to 0.5.2.

changelog
===========

Version 0.5.1 (June 25, 2013)
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* Ensure compatability across distros by detecting if `python2` is available

Version 0.5.0 (Apr 13, 2013)
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* Use #rstrip to fix table mode bug

Version 0.4.2 (Feb 25, 2013)
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* Add new lexers, including custom lexers