genome/UR — pull request #48 by tmooney (2014-12-02 21:11:11+00:00)
Title: Better Error Handling for Listers

When a bad filter was provided to listers, the error messages ranged from verbose to completely unhelpful. These changes:
* stop the lister from running away on bad properties
* check the validity of more boolexpr filters sooner
* prevent the spurious "recognized by the deprecated filter parser" spew when a bad property is specified