* so far i think i broke everything
* halp super hard
* this is what i wanted
* fixed error
* some fixes
* svg-working
* less code
* fixed shadow for text and groups
* fixed tests
* one file test more
* fixed lint
* works
* ok more tests
* remove a lint issue
* removed unused method
[BACK_INCOMPAT] `fabric.BaseBrush`shadow properties are combined into one property => `fabric.BaseBrush.shadow`(shadowColor, shadowBlur, shadowOffsetX, shadowOffsetY no longer exist)
Removed fabric.Text.getText method => is generated with `fabric.util.createAccessors`
`fabric.Shadow` can now initialized with string or object (e.g. '10px 10px 5px rgb(0,0,255)', 'rgb(0,0,255) 10px 10px 5px', {color: 'gb(0,0,255)', offsetX: 10, offsetY: 10, blur: 5})
`fabric.Shadow.getShadow`to get css3 declaration of shadow (String)
`fabric.Object.set('shadow', value)`is now the same as `fabric.Shadow.setShadow(value)`
Add unit tests
- SVG attribute opacity is now used for object's opacity
- fill-opacity and stroke-opacity are added to stroke and fill color value
- Add hsl/hsla support (e.g. hsl(270, 80%, 10%), hsla(320, 10%, 66%, 0.5))
- Add support for rgb/rgba values with whitespaces around values (e.g. rgba( 255 , 100 , 50 , 0.1 )) and percentage values (e.g. rgb(100%, 67%, 15%, 0.8))
- Delete stroke and strokeWidth from fabric.Text (defined in fabric.Object)
- New unit test for parse stroke-opacity and fill-opacity
- Update unit tests (new tests for hsl/hsla and rgb/rgba (whitespaces and percentage values))
- Change equal and deepEqual parameter order (e.g. equal(actualValue, expectedValue, message))
- Doc additions
- fabric.Text has now strokeDashArray support (only native support)
- fabric.Text.fill = null should now work
- Fix save/restore context in render methods => setLineDash affected drawBorder/drawControls
- Add strokeLineCap (default "butt"), strokeLineJoin (default "miter") and strokeMiterLimit (default 10)
- Add support for fabric.Object#fromElement for strokeDashArray (and other stroke properties)
- Add @default tag to properties (JSDoc 3)
- strokeDashArray now only works if stroke property is defined
- Add trokeLineCap (default "round"), strokeLineJoin (default "round") to fabric.BaseBrush
- Updated unit tests
