fabric 2.0.0-beta.7

Version 2.0.0 beta 7

on Node.js NPM

added a build flag for not attaching fabric to window #4199
removed .active property from objects #4200
Normalize Api for getSelectionStyles, setSelectionStyles #4202
Fix shader for convolute filter #4207
Better mouse support for lockscaling flip #4225
Fix toDataUrl getting a blank canvas #4229
Ouput version to json Objects #4251
Use backstoreOnly for toDataUrl resize #4254
Fix safari svg whitespace #4294
Fix Gradient export for paths #4274
Move mouseout/over in mousemove events #4283
Fix detection of click at the end of line #4295
added new event selection:updated #4311
Fixed free drawing path displacement #4311
Fixed scale equally and flipping not happening #4313
Select by drag makes the object fires 'selected' #4314