Squashed 'vendor/assets/javascripts/d3/plugins/' changes from b91ab3e..c558538

c558538 Update README.md
6b12e6e Update README.md
56b0c84 Fix #72 - add note re. character encoding.
be38866 Slightly prettier link.
670c24d Add redirect.
a871438 Extract d3-geo-projection plugin.
f1d181c Fix #68: occasional NaNs in d3.interpolateZoom.
971c22b Update README.
55ed3b4 s/gallStereographic/cylindricalStereographic
08b8d10 Add Foucaut projection.
8085ae6 Add link to Cassini projection.
3b7c18c Add note about d3.geo.gilbert.
a7ad4cc Rewrite d3.geo.gilbert.
29f43a8 Fix d3.geo.gilbert.{translate,scale,rotate}.
0241b32 Update dependencies.
01b182b Add thumbnail for gilbert.
9f2fbdb Add link to Gilbert’s Two-World example.
183c513 Simplify two-point equidistant.
dd55e46 Update D3 dependency version.
8a79b89 Add tests for gilbert.
41dac22 Add Gilbert’s Two-World Perspective.

git-subtree-dir: vendor/assets/javascripts/d3/plugins
git-subtree-split: c5585380d556bccf79ce6caf152c2a4bf2632de2
Merge commit '352a990bcdcba5ebab6c758cf3013cb756c45fe7'

* commit '353a990bcdcba5ebab6c758cf3013cb756c45fe7':
  Squashed 'vendor/assets/javascripts/d3/plugins/' changes from b91ab3e..c558538
Update bundled plugins