increpare/PuzzleScript — pull request #267 by rmmh (2014-11-30 03:23:58+00:00)
Title: fix #264 (bad movement masks), improve tests

Fixed silly movement mask bug.

This breaks the "legend of zokoban" test -- I made test failures now give *some* information (a state diff), but its usefulness & readability is limited for large states. Not sure precisely what's going on, it's likely that some part of Zokoban was experiencing the same bug. Hopefully it doesn't _rely_ on it.