Cleanup

* Updated settings for Xcode 4.6.
* Fixed compiler warnings, mostly about format strings
* Made MYUtilities a git submodule
* Added an "All" target
Converted to modern Obj-C syntax (literals + subscripts)

Just automatic Xcode refactoring.
ARC conversion.
More modernization

* Declare delegates as __weak
* Move ivar declarations out of headers
(get tester working)