Image Flip horizontal/vertical node

Image filter/node for flipping image horizontally/vertically or both. Mostly for 2D.

Thanks for the request, @joeladria. This (and many other new image filters) will be part of the upcoming Vuo 0.5.7 Vuo 0.6.0 release.

(Edit: We decided to rename the 0.5.7 release to 0.6.0.)  

@joeladria: The Vuo 0.6.0 release includes new Flip Image Horizontally and Flip Image Vertically nodes.