-Fixes to unwrapper (remove degenerates), makes Thekla not crash
-Added optional cancel button in EditorProgress
-Added function to force processing of events (needed for cancel button)
-Added unwrap functionality to Mesh
-Ability to display and debug mesh UVs
-Added multiline draw, so it's easier and faster to draw UVs
-Many fixes to SurfaceTool
-Fixes to Thekla Unwrap, but it's a piece of ass and it keeps crashing. Will have to go away