Fixed some typos in docs and comments.
Fixed an infinite recursion bug in CPTNumericData.
Minor update to the CPTNumericData tests.
Fixed a memory leak in the CPTMutableNumericData tests.
Added a unit test for the slate theme.
Fixed some static analyzer warnings.
Cleaned up some #import statements.
Updated all projects for Xcode 4.6 compatibility. Fixed some static analyzer warnings. Fixed issue 502.