git-svn-id: http://google-refine.googlecode.com/svn/trunk@120 7d457c2a-affb-35e4-300a-418c747d4874
Implemented comparison operators. git-svn-id: http://google-refine.googlecode.com/svn/trunk@117 7d457c2a-affb-35e4-300a-418c747d4874