mbostock/topojson — pull request #33 by jasondavies (2013-02-02 01:21:05+00:00)
Title: Add new --simplify-proportion option.

This allows the proportion of retained points to be specified for
simplification, which may be friendlier than specifying an exact area.

This also includes a fix for NaN areas that were occurring due to small
negative values in the triangle area calculation (being passed to sqrt).