Theater 2015-16: Steep gets down and grapples with Linklater premiere, more Simon Stephens

17th in a series of season previews: Founding artistic director Peter Moore says Steep Theatre’s 15th season captures the essence of what this scrappy company is all about – “ground-level views of life.” That low-angle survey begins with the world premiere of Hamish Linklater’s “The Cheats,” about two neighboring couples who suddenly find themselves uncomfortably close.