mbostock/d3 — pull request #1657 by DanGoldbach (2013-12-05 08:08:12+00:00)
Title: Use `inDelta` not `equals` for double comparisons in polygon area test

Fixes this:
```
area Polygon
✗ lune
» expected 3.141592653589793,
got	3.1415926535897927 (==) // area-test.js:50
✗ Broken » 2546 honored ∙ 1 broken (9.349s)
npm ERR! Test failed. See above for more details.
npm ERR! not ok code 0
```