Fixed changes made to device split nodes yesterday - should work like before now.

Discard = All queued events between last and current frame get accumulated into current state = patch will miss certain states.
Queue = Next queued event gets accumulated into current state = patch will see all states.
added success and error pins to texture writers. #594
added success and error pins to svg writer and reader string. #594
added success and error pins to svg writer and reader string. #594
added Serialize and Deserialize to VColor
SVG nodes now use native SvgDocument type and Background color is stored via custom attribute. see http://vvvv.org/forum/svg-custom-struct