WIP on drag handles
Drag handles working, WIP on hovering bounding box
Remove redundant event handler code
Fix shape of widget hover bounding box
Eliminate tearing in drag handle text
Use ellipse for hover boundary on draghandles
Disable fixture shape outline
Make fixtures easier to grab
Hide drag handles when not hovering.  Doesn't work too well yet.
More work on hiding drag handles and selecting / deselecting fixtures
Pixel color drawing WIP
Cleaned up pixel painting
Work on fixture info editing
More work on fixture info editing