Review Notes
Create ImageSource
Prepare to refactor CreatePuzzlePieces
BEGIN Create puzzle images
BEGIN Implement Puzzle Images
CONTINUE: Implement Puzzle Images

Rewrite Create Edges
Finish Create Pieces
Draw Pieces
Round piece edges to pixels
Use real edges as clip
Create pieces from piece images
Fix piece snap and puzzle complete
Fix next puzzle
Fix stack pieces
Show only one piece
Hide working canvases
Reduce piece radius size