add_svgelement_transform - #658

The following elements should have "SVGTransformable":

SVG, G, A, DEFS, USE, IMAGE, SWITCH, PATH, RECT, CIRCLE, ELLIPSE, LINE, POLYLINE, POLYGON, TEXT

It appears to be missing from:

SVG, DEFS, SWITCH

Please could you add this change to the SVGDefsElement.* and SVGSwitchEleemnt.* as well, so that all places are now correct?

Also, please include the one-line comment in the .m files where you have the line "@synthesize transform;" -- all the other classes have the comment:

""synthesize transform; // each SVGElement subclass that conforms to protocol "SVGTransformable" has to re-synthesize this to work around bugs in Apple's Objective-C 2.0 design that don't allow @properties to be extended by categories / protocols"

...this will make sure no-one accidentally deletes that @synthesize line (unless it is no longer necessary? I haven't checked recently)