removed beta status, version to 1.2.1 bumped release date, include fixes for nth-last-child and nth-last-of-type, fixed ':target' resolver to only do checks if an hash is present in the URL, added 'option' elements to the ':checked' resolver, improved speed for context queries and fixed callback parameter in the 'match()' method, added BUGGY_GEBID and BUGGY_SELECTED feature tests
removed beta status, version to 1.2.1 bumped release date, include fixes for nth-last-child and nth-last-of-type, fixed ':target' resolver to only do checks if an hash is present in the URL, added 'option' elements to the ':checked' resolver, improved speed for context queries and fixed callback parameter in the 'match()' method, added BUGGY_GEBID and BUGGY_SELECTED feature tests

dperini/nwmatcher,dperini/nwmatcher,dperini/nwmatcher