Changes since the v0.2.5 and v0.2.6 release.
added hardware test version for programmable coolant system
added file system selectiong start folder via ini entry to personalize what folder is default
updated tool touch off to fix some bugs with work offsets causing incorrect tool length measurements
IMPORTANT NOTE: G59.3 work offset MUST have zero offset for tool touch off to work as it uses G59.3 as the wcs when measuring tool lengths now. if there are work offsets set in G59.3 the tool_touch_off.ngc file will generate inaccurate tool lengths.