• incompat: New filter system with WEBGL.
• incompat: New Text/IText/Textbox code. Multibyte compatible, more accurate.
• incompat: RequestAnimationFrame is used for the automatic render calls.
• incompat: Named setter/getter are optional now.
• incompat: Removed PathGroup class
• incompat: Paths cannot be restored anymore from strings #3713
• incompat: bumped node version to 4+ and jsdom to 9. #3717
• incompat: removed the es5 / JSON shim support #3722
• fix/incompat: IText setSelectionStyles does not change anymore style if no selection is present #3765
• skipOffscreen default to true
• Text.setSelectionStyle does not change anything if there is no selection #3765
• Switch to canvas-prebuilt as dependency. Added parameter to choose the canvas package #3757
• improvement: renderControls can now be called on its own. Added parameter styleOverride to allow for overriding current properties #3887
• removed hasMoved and saveCoords from Group class #3910
• forced all fromObject and fromElement to be async, normalized api. #3996
• improvement: added support for request animation frame in mouse events #3997
• added dblclick support for all objects #3998
• textbox scale as a normal object #4052
• Removed image meetOrSlice, alignX, alignY, introduced cropX, cropY #4055
• Added Text.cleanStyle, Text.removeStyle #4060
• change: lockRotation will not hide the mtr control anymore. introduced notAllowedCursor for canvas. #4064
• improvement: added 2 percentage values to fabric.util.animate. #4068