0001291: plane offset precision is limited to 0.1
Set explicitly trackball as default orbit style
0001290: Add spiral tool in Part Module
+ Fix build failure with >= OCC 6.5.2
+ Add missing include
Mesh Booleans using OpenSCAD
remame OpenSCADUtils.callopenscadmeshstring to match with Keith
create action for hull and minkwoski
OpenSCADUtils.newtempfilename()
hull and minkowski