Portable Bubble changelog

Changelog:- Added two background musics (thanks to sakya);- Now the game uses oslib (thanks to sakya);- Frame rate is stabilized;- Added a system of record for each level;- First to play a level, is now possible to see a preview of that;- Added two new level sets;- Added the possibility to download new level sets from you PSP;- Solved some bugs;- Graphic improved.

from the README:Its name is Portable bubble, and it is a Puzzle Bubble clone for Sony PSP. It's developed by Germano "Gefa" Fabio. The graphich instead is by Ignazzi "Gabbo" Gabriele.In this game, you are free to select and play a level set or a random level (just I wanna remember you that the default level set is by Frozen Bubble's authours.)