debugging repo
Merge remote-tracking branch 'origin/owen-air' into owen-uni

Conflicts:
	dxfTest.v11.suo
polylines working!!

the bulge change was correct - (subtracting 2pi) that I had, but the
condition under when to apply it was wrong.

Previously was using if(bulge<0) only, now uses if (bulge < 0 &&
(endTheta - startTheta)>0)
draws lines,circles,arcs and polylines
added stage bounds, coordinates, gets dxf units

about to try to plot the drawing using the correct units, anticipating
some issues which will need to be worked through
new drawing and polyline not working :(
getting there (dxf importing polylines still)

polys still not 100% but works in some situations
similar lines as before
getting up to date