The stormy start to May has served as a fitting setting for the debut of The Public Theater’s Mobile Unit production of Shakespeare’s The Tempest, that washed up on its home shores near Astor Place after a three-week, 17 stop tour to correction facilities, homeless shelters, libraries and community centers across all five boroughs of New York City. The Mobile Unit really puts the “public” in The Public Theater, whose prestigious productions continue to sell out, garner audience and critical praise and conquer both the commercial (anyone heard of a little historical musical about a dead politician called Hamilton?) and