Toxaris/pts — pull request #119 by Blaisorblade (2014-08-12 19:48:51+00:00)
Title: Support "language statement" (#111)

This is only correct for single-language developments, but the rest should now be easy. (It took me a while to realize I could use `local` instead of having to switch to a State monad, which I luckily didn't start).