Update to Ext JS 5 (fixes wilk/Ext.ux.data.proxy.WebSocket#12)
This version does work on Ext JS 5.

Known issue: Chart in Ext JS 5 does not render correctly after updates in the store.
Known issue: Removed rownumberer from the demo grid because of bug EXTJS-13759 (fixed in Ext JS 5.0.1).
Merge branch 'ext5' of https://github.com/bob-nl/Ext.ux.data.proxy.WebSocket into bob-nl-ext5

Conflicts:
	WebSocket.js
Merge branch 'bob-nl-ext5'