Fix typos
Fix macro path issue
Add nullify method to Matrix class
Add method to check if console mode is on/off
Edge collapse method
Fix possible crash when checking for available undo/redo
0001189: Re-assign hot keys 0 thru 6 to line up with the icon placement.
Arch: Restored length property of walls

Walls can again be based on no underlying object, and be
only defined by length, width and height.
Arch : Added wood sections presets to structures
Arch: Set wall and structs default units to mm
Draft: Small label fix
Arch: Added steel profiles to structs
Arch: Small fix in walls
Draft: Better interface for setting hatch patterns
Draft: Small fix in dimensions
Arch: Added Tool property to Structs to define an extrusion path
Exposed vector negative to python
Arch: small fix in IFC importer
Draft: removed unnecessary uses of DraftVecUtils
Draft: Fixes bugs from last commit