Add localEqual, but had to use a different operator.

The three equals (===) conflicts with the ScalaTest ===.
I made it ==== for now. I'm not sure how to resolve this.
Add localUnequal.
Add localGreater.
Fix a bug with right associative localGreater.
Add localLess.
Add missing test to GreaterSpec.
Add localGreaterOrEqual.
Add localLessOrEqual.
Add localAbs.
Add localSinh.
Add localSin.
Add localCos.
Add localTan.
Add localArcSin/Cos/Tan.
Add localAtan2.
Add local hyperbolic cos and tan.
Merge branch 'master' into localops
MaxN and MinN operations
Merge remote-tracking branch 'upstream/master' into feature/selection
Update files for new directories