cylc/cylc — pull request #554 by benfitzpatrick (2013-07-03 10:19:32+00:00)
Title: #75 - single updater thread for the cylc GUI

This centralises the Pyro communication part of `cylc GUI`, which was previously replicated in each of the three views.

It also fixes a bug in the LED/Dot view where a hover-over on a dot can produce a traceback if the tasks are grouped.

@matthewrmshin, please review.