moment.js v2.5.1
Major bug fixes! Clustering of events. Performance increase.

* [0.7.50] - bug fix: clear playback when toggling from playback to
liveview
* [0.7.51] - bug fix: don't requery the timeline whilst data is already
being processed
* [0.7.52] - bug fix: switch setInterval to setTimeout on noty
* [0.7.53] - preloading fixed, no longer using Core JS Library
* [0.7.54] - attempt to fix lockup issue
* [0.7.55] - experimental testing - processTimelineData() removed
* [0.7.56] - major bug fix: web worker introduced to stop browser
locking up when doing processing of timeline data
* [0.7.57] - Notifcation messages changed to be more helpful to the user
when requerying the timeline. Clustering enabled on the timeline
(performance increase!)