Fixed Bubble Z write order. Tweaked Animation blender, still buggy...

Signed-off-by: Olof Wallentin <olov.wallentin@gmail.com>
Quick update.
Merge branch 'olof' of github.com:rodstrom/yomibubble into jens
New sound effect implementations. Fixed the flaws in the tutorial graphics.

Signed-off-by: Farbror Tiny <jens.syntax@gmail.com>