mbostock/d3 — pull request #1242 by mbostock (2013-05-13 22:13:48+00:00)
Title: Preserve domains exactly.

Fixes #1241. With d3.scale.pow, d3.scale.sqrt and d3.scale.log, the underlying
implementation is a linear scale. Due to the transformation a linear domain and
the limits of floating-point precision, the reported domain could differ
slightly from what was set. Now, the set domain is preserved exactly.