build 339.02 more work on arc exception cases

build 339.01 fixes G2 pocket issue

0.93 release candidate

untested changes identified by Mike Estee on tinygDev group

installed help screen

0.93 release candidate - updated machine profiles

fixes to homing and M codes

build 337.09 in dev - diagnosis and fix for Issue #6

build 337.08 dev - untested homing changes