Fix #72 - add note re. character encoding.
Update README.md
Update README.md
Add deprecation notice.
Fix a bug in hexbin.centers.
Fix bug.
Fix bug with flipped triangles.
Include hexbin grid coordinates.
Update copyright year.
Add d3.scale.cubehelix plugin.
Fix off-by-one.
Clarify mapping from original scheme.
Formatting.
Another example.
Fix documentation.
Note about saturation.
New API.
Update documentation.
Update documentation.
Update documentation.