THEATER: Eugene O’Neill’s early one-act plays get a rare blast of daylight in The Pioneer, a new production that stages four of his nascent gems plus a whimsical monologue O’Neill wrote from the point of view of his dog. The plays boast O’Neill’s signature assortment of furious, flailing characters that would come to dominate his full-length work. Writing for the Times, Rachel Saltz notes that the plays range from “interesting” to “wonderful” and concludes that......