made svg transform collection a proper ICloneable
avg fragment now fires attribute changed events
try  unboxed checks for attribute changed events
svg transforms can now be compared and return correct results
now doing element wise matrix comparison
remove uses depth first recursion for children
svg line now fires all attribute changed events
view box has correct equals check now
fixed forgotten object bounding box
If the focal point isn't given at all, its assumed to be at the same place as the center point.

http://www.w3.org/TR/SVG/pservers.html#RadialGradientElementFXAttribute
color blend: fixed gradient's stops order
fixed color blend for linear gradients
Merge branch 'changes' of https://github.com/andreichuk/SVG into changes