Try, if you must, to resist the gale of good will that blows out of 'Come From Away,' the big bearhug of a musical that opened on Sunday night at the Gerald Schoenfeld Theater. But even the most stalwart cynics may have trouble staying dry-eyed during this portrait of heroic hospitality under extraordinary pressure...this Canadian-born production, written by Irene Sankoff and David Hein and directed by Christopher Ashley, is as honorable in its intentions as it is forthright in its sentimentality. And it may provide just the catharsis you need in an American moment notorious for dishonorable and divisive behavior...the show - based on interviews with the people who inspired it - covers a vast expanse of sensitive material with a respect for its complexity. It understands that much of what it portrays is guaranteed to stir fraught memories among many of us. And it mostly refrains from overegging what could have been a treacly, tear-salted pudding. Instead, it sustains an air of improvisational urgency, which feels appropriate to a show about making do in crisis, and it doesn't linger on obvious moments of heartbreak and humanity.