Calls to exit the game are now removed via the much more powerful and easy to use ASM system, as is done in FML. Note that attempting to run the game results in an MC caused NPE, which should be fixed soon. IT IS KNOWN ABOUT! No need for a issue.
Calls to System.exit() or Runtime.halt() or Runtime.exit() are now removed as is done in FML via a transformer using the more powerful and easy to use ASM system. Note that the game doesn't run correctly, it should be fixed soon. Oh, and the documentation will be moved to it's own repo soon.