Atari announced it has shipped Dragon Ball Z: Supersonic Warriors for Nintendo Game Boy Advance. Now for the first time ever in a Dragon Ball Z video game, fans can take their battles skyward by launching explosive aerial assaults on opponents, just like in the animated series. Developed by Banpresto, Dragon Ball Z: Supersonic Warriors combines traditional 2-D fighting with free-flight, aerial combat and allows players to assume the roles of 15 characters from the TV series including Goku, Vege…