hypothesis/h — pull request #731 by gergely-ujvari (2013-09-06 16:00:39+00:00)
Title: Heatmap: introducing gapSize parameter.

The clustering algorithm uses this gapSize parameter (it was a constant before) to determine if an annotation is far enough or not from the current bucket position to merge the annotation into this bucket.
As a constant it was set to 180, but now it has a default value of 60 to make the clustering less agressive.

Fixes: #642