Bump to 3.1.0.rc1. Please report any bugs
Added rails edge and ruby 2.1.1 to travis
Merge pull request #489 from seuros/master

Add counter cache #390
Removed duplicate code
Merge pull request #490 from seuros/duplicate

Removed duplicate code
Code clean up
Merge pull request #491 from seuros/cleanup

Code clean up
Fix downcasing of unicode tag names