BY ELISE MCDONOUGH · HIGHTIMES.COM • FRI JAN 01, 2016 While the cannabis edibles industry continued to grow by leaps and bounds in 2015, the chilling effect of increasing regulation became apparent in Colorado this year, with less creativity and originality present in the field of entries at the HIGH TIMES Cannabis Cup held in Denver. The most recent ruling mandates a universal symbol—THC with an exclamation point—that must be stamped or marked on every edible to distinguish it from regular food, even when outside of its packaging. Edibles makers in Colorado fear that if their manufacturing costs continue to…