JP Yarn Swap Do you have yarn you’ve been meaning to get rid of? A project you know you’ll never finish?   Join us for a Yarn / UFO* Swap (*UnFinished Object!) When: Thursday, April 7, 6:00-7:30pm Where: Jamaica Plain branch library (12 Sedgwick St.)     Bring yarn, supplies and projects in need of a new home.  Get new goodies for your next project! Get ready for Spring by sorting out your s…