Squashed 'vendor/assets/javascripts/d3/plugins/' changes from 37cf815..fc984ac
Squashed 'vendor/assets/javascripts/d3/plugins/' changes from 37cf815..fc984ac

fc984ac Update copyright year.

git-subtree-dir: vendor/assets/javascripts/d3/plugins
git-subtree-split: fc984ac269a9522c4b12ec568839ab703b11d51e

bai/d3js-plugins-rails