abrandoned/heredity — pull request #1 by liveh2o (2012-11-17 19:48:56+00:00)
Title: Don't run the included hook if the heredity has already been included

...so that inheritable attributes aren't reset.

Fixes a problem where including the module multiple times (e.g. in separate modules that are then included into the same class where clobbering each other's inheritable attributes.