mbostock/d3 — pull request #510 by jasondavies (2012-02-16 13:02:27+00:00)
Title: Prevent next tick when force.stop is called.

This is useful when stopping the layout in response to a user action, e.g. if another layout is used to position the nodes in an event handler. In this case, we don't want the next tick of the force layout to run as it could undo the positioning work done in the event handler.