Alpha 1.1

Lot of work had been done last weeks. Textures aren't finished and won't be finished before a long time. These textures aren't final, I need to get skills at drawing.

• Added boost (spacebar) and boost gauge
• Added 2 types of Kinetic weapons (now Turret, Gatling and Cannon)
• Kinetic Gatling has got a heating behaviour, so if it's shooting too many bullets, it'll overheat and it'll be unable to shoot anymore
• Kinetic weapons have got limited ammos, when the turret runs out of ammunitions, a reload timer is launched
• Weapons can't be selected ingame (no menus yet)
• Added auto turrets with predictive aim (enabled or not)
• Auto turrets on the player can't be disabled ingame (no menus yet)
• Added Health and Shield bars on HUD
• The highscore is now saving, so when you will launch the game, you'll get your last highscore saved
• Added musics made by AI
• Several bugs spotted and fixed