[MaiTai] NextGen UI

[Joshua Marinacci <joshua@marinacci.org>]

This thread is to discuss the next generation UI. Things that won't go  
into V1 but which will be V2 or later.

thoughts on visual editing:  For certain blocks it would be useful for  
them to have a visual editor. For example, a perspective transform  
isn't useful without a way to visually move the warp controls around.   
We should have a generic shape which lets you edit the shape in an  
visual editor similar to illustrator (a very simplified version).

This dovetails nicely with another project I've been working on: a  
JavaFX based drawing program. I've got some code lying around that  
does basic drawing of standard shapes (rect, circle, text), bezier  
curve / path drawing, and proper multi-selection.  It should be  
possible to package this up into a reusable embeddable editor that the  
blocks could customize to their needs.

- Josh