[PythonCAD] More updates at repo

[Art Haas]

Hi.

A few more changes are available at the repo - a few more commands work
again as well as new commands 'adim', 'hdim', 'ldim', 'rdim' and 'vdim'
which are used to create Dimension entities. Just 'svn update' and
you'll get these changes.

Art
-- 
Man once surrendering his reason, has no remaining guard against absurdities
the most monstrous, and like a ship without rudder, is the sport of every wind.

-Thomas Jefferson to James Smith, 1822