v0.4.0-alpha : Resources loading + Xcode release target

Functionality:

• Resources copied for unit tests and Xcode build
• Xcode debug and release targets now load distinct generated libraries
• j2objcConfig syntax standardized for translateClasspaths and translateSourcepaths
• Helpful error message upon failure with full command line, stdout and sterr

Code Quality:

• @CompileStatic for plugin build type checking
• Expanded unit test coverage now comprises 81 tests
• Numerous bug fixes