Rename type "handlers" to type "setters"
Transform NSInvocation getting arguments else-if chain into Chain of Responsibility
Move helpers into separate folders for argument getters / return setters
Rename NSInvocation category from TKAdditions to Mockito now that it's changed so much from the original
Add missing long long getter. Update coverage
Commenting out 2 tests to diagnose Travis-CI hanging
Restore 1 test to check Travis-CI hang
Hide test, restore other to check Travis-CI hang
Rename return setters to return value setters
Return value setters: change successor to hidden property