The Mercury provides news and fun every single day—but your help is essential. If you believe Portland benefits from smart, local journalism and arts coverage, please consider making a small monthly contribution, because without you, there is no us. Thanks for your support! GOOD MORNING, PORTLAND! There’s a heatwave coming to town, so prepare your A/C unit (if you’re lucky enough to have one). Will you embrace the May heat or draw the blinds, vampire-style?...