ENH: Keep a constant scaling factor at different zoom levels
CLN: spaces-> tabs again
Merge remote-tracking branch 'origin/master' into enh/scale-with-zoom
Merge pull request #14 from enthought/enh/scale-with-zoom

Enh/scale with zoom
Merge remote-tracking branch 'origin/master' into enh/vector-direction

Conflicts:
	frontend/js/vector.js