geotrellis/geotrellis — pull request #435 by joshmarcus (2013-03-28 20:15:15+00:00)
Title: Change feature traits into classes.

This checkin converts all of the feature traits (e.g. Point, Line, etc.)
into classes. Geometry is now a class instead of a type alias for
Feature[G,D]. This should greatly simplify error messages.