Clean up whitespace
Use a collection of PolyLine rather than a single MultiPolyLine
Add arrowheads to vectors... sloooowwwwwwwwwwly
Revert "Add arrowheads to vectors... sloooowwwwwwwwwwly"

This reverts commit bb289026e86cb0c4ab92c72324fca49588519b9c.
Add arrowheads to vectors quickly
Merge remote-tracking branch 'origin/master' into enh/vector-direction

Conflicts:
	frontend/js/vector.js
Closure linter fixes
Fix broken merge
Merge remote-tracking branch 'origin/master' into enh/vector-direction

Conflicts:
	frontend/js/vector.js
Merge remote-tracking branch 'origin/master' into enh/vector-direction

Conflicts:
	frontend/js/vector.js
Merge pull request #12 from enthought/enh/vector-direction

Add direction indicators to vectors