various experiments
todo updates
anchors take timestamp into account when getting current location
remove console logging used for testing
endpoint update offset does not force repaint..this needs to be verified
minor reformat to help debugging
update todo with connector extension snippet
changelog updates
temporary commit of demo testing changes
reinstated canvas mouse adapter code, but only adding it in the setRenderMode method, as Canvas has to be explicitly requested
fixes for canvas renderer...arc and straight segments
dont add segment if it is a point (vml doesnt like this)
Merge branch 'weird_loopback_connections' into dev/1.4.2

Conflicts:
	demo/requirejs/scripts/jsplumb.js
remove test code from demo