ContinuumIO/datashape — pull request #98 by mrocklin (2014-10-02 00:36:57+00:00)
Title: More predicates

Two changes

1. Integers are valid dimensions (is there a reason to avoid this @mwiebe ?)
2. Add `isunit` predicate to tell if something is a type like int32, float32, string (can anyone think of a better name?