vvvv40beta16 release with plugin interface

The latest vvvv version offers developers an interface to write their own nodes for vvvv. A plugin is basically a .dll file, that can be drag&dropped into a vvvv patch where it appears as a node. If its stored in vvvv's plugins directory, its even available in the node list.
Currently value, color, matrix transform and string in/out pins are supported. Note that a plugin can also create a window. In theory one could write an openGL renderer with it...
We have prepared some simple templates to start from. Here is how to do it. The code can be browsed on sourceforge.