V0.9 - KFest Hackfest Entry

This is the code base once I ran out of time for Hackfest. The CLI command works well. The NDA is rough and a good way to crash you GS.

abCalc Version 1.0.1

Some minor fixes over v1.0.0:

• The abCalc shell exe now works correctly. There was a problem in the Makefile which has been fixed.
• The abCalc shell command is now documented.

abCalc Version 1.0.0

This is the initial release of abCalc for the Apple //GS.