Handle returning of bools when marshaling values to objc land.
Finish our trackmixcode sample after closing the window.
Oops, need to return true for shouldTerminateAfterLastWindowClosed.
Proper marshaling when returning a boolean value in a func.

_C_CHR can be a bool, but also a numerical value, so we handle
that properly now.
Update pirouette the latest version.
Merge pull request #54 from carlosalberto/master

Implement  shouldTerminateAfterLastWindowClosed bits ;)