Experimental CAD Sketcher integration for simple arbitary polyline ex…

…trusions

Removing an element now also purges connection relationships

3D axis representation contexts are now created by default for all ne…

…w projects

Profile extensions now use the new engine and support 3D axis represe…

…ntations

Minor fix. See IfcOpenShell#2416.

You can now set an exact wall length

Minor fix to 12DToRevitTINS patch

New recalculate wall operator to manually trigger an update of all wa…

…ll connections

Fix IfcOpenShell#2416.

Fix IfcOpenShell#2413. Bug where multiple tasks may accidentally over…

…ride animation keyframes.