david-macmahon/rb-gsl — pull request #4 by mvz (2013-12-21 12:01:21+00:00)
Title: Support newer gsl

The enums `forward` and `backward` have been deprecated since GSL 1.7, and are no longer present in GSL starting probably 1.15. This pull request drops support for GSL < 1.7 and uses the new enums.