The party's over for SunPower shares after a short squeeze caused the stock to nearly double in two trading days this week.The bubble burst on shares of SunPower (SPWR -26.88%) today after the stock had been soaring this week. The provider of residential solar and energy storage services didn't announce anything new this week, but its stock rocketed higher by 91% in the first two trading days.That came from a wave of meme stock trading focused on heavily shorted stocks, including SunPower. As of the end of ...