profiles rectangles, added dimension drawing and more cross sections
added generic hollow rectangle profile
changed file and folder names from rectangle to hollow rectangle
fixed typo that broke base parameters for freecad
recompute document after adding part
Merge remote-tracking branch 'berndhahnebach/rrw' into profiles
Merge branch 'master' into profiles
I beams can be optionally added as Arch structures
hollow rectangle profiles optionally as Arch Structs
C beams optionally as Arch structs
cosmetics