Added isKindOfClass: check.
use instancetype instead of id for initializers
use NSInteger instead of int for 32/64 bit safety
Improved rules for autostubbing.
Merge pull request #133 from madsolar8582/fixintegerprimitives

Use NSInteger instead of int for 32/64 bit safety
Merge pull request #130 from madsolar8582/updateinitializers

Use instancetype instead of id for initializers
Merge branch 'AshFurrow-kind-of-class-check'
Added method to make creation of equality constraint explicit.