Fixed unrecognized selector error from jQuery if hash contains something like '#/about' (e.g. from another javascript plugin).
disable hashchange, conflicts with backbone route handling
fixes #84 - :after event does not fire when collapsable is collapsed
Revert "disable hashchange, conflicts with backbone route handling"

This reverts commit 7e7a6531a5df07915917df3db9b96f7d5616cec3.