Merge pull request scratchfoundation#541 from LLK/fix_edge_bounce

Use ScratchSprite::bounds() instead of Flash's less accurate getRect() m...

Bumped version to 427

Bumped version to v426c

Merge pull request scratchfoundation#512 from LLK/fix_3d_touching

Fix 3d touching

Bumped to v425

Merge pull request scratchfoundation#487 from LLK/v424

v424