Blender Git Loki

New UV editor / Image Window features:
- Draw Faces in the UV editor
- Draw Faces, selected in the UV editor, in the 3D view
- Draw Shadow Mesh in the UV editor (for faces unselected in the 3D view)
- Select Linked UVs (LKEY)
- Unlink Selection (Alt+LKEY)
- Stick (Local) UVs to Mesh Vertex on selection
- Active Face Select
- Reload Image
- Show / Hide Faces in the UV editor (H, Shift+H, Alt+H)
- Proportional Editing (O, Shift+O)
- Stitch, Limit Stitch UVs (snap by mesh vertex)
- Weld / Align UVs (WKEY)
- UVs Snap to Pixels on/off switch
- RMB in Texture Paint or Vertex Paint mode picks color
- Select Inverse in Faceselect mode

I hope these are all the features that were commited. The new UV Mapping
panel (and code) will follow later.