Limit charge distance.
Optimize charge calculation.
pass subgroup/parent/"j" index to filter function for consistency with most everything else
add built versions
Update smash; fixes #1626.
add jspm package.json config
Update tests
Why are there conflicts
Implement monotone chain convex hull (faster and cleaner)
Merge branch 'better-hull2' of github.com:GoldyOrNugget/d3 into better-hull2
Add CONTRIBUTING.
Clean up sort comparator
More comments
Add a few more tests
Remove accidental global vars
Add compiled files
Merge branch 'master' into better-hull2
Merge branch 'master' of git://github.com/guybedford/d3
Fix transform for ordinal→quantitative scales.

Previously, invalid transform attributes were being set for an
ordinal→quantitative scale transition, because entering ticks were
undefined in the old (ordinal) scale, and exiting ticks were undefined
in the new (quantitative) scale.

Fixes #1620.
Simpler update between ordinal & quantitative scales.