Replaced recursivelyTraverseSvg() and friends
with the versions from eggbot.py, those from eggbot_hatch.py
would only do closed paths. Makes sense for them, but
not for us.
Added dummy=True debugging aid to SilhouetteCameo()
missing last path component added.
This was actually a nice feature for cutting without a mat.
Paper would not fall appart that easy :-) but
if we want that, we need to implement that properly.
I rather prefer proper path sorting for cutting without a mat.