Can no longer add components multiple times, add tests for ComponentContainer.

Close $446.
Update built files
ComponentContainer.components() now returns shallow copy.
Merge pull request #449 from palantir/446-add-remove

Can no longer add components multiple times, add tests for ComponentContainer
made bar renderers default blue
close #441
Update built files
changed to ES6 syntax
Release version 0.13.0
merged with master (with conflicts)
fixed conflicts
Merge pull request #450 from palantir/441-default-steelblue

made bar renderers default blue
Update built files
Merge remote-tracking branch 'origin/master'
Update built files