azavea/geotrellis — pull request #137 by joshmarcus (2012-07-11 15:36:56+00:00)
Title: Move control operations to logic package.

As part of the operation renaming and reorganization, operations that affect
control flow have been moved to a logic package. Map has been renamed to Do,
and Do1 and Do2 can be created through separate apply methods on the Do object.