YARMOUTH — It’s the marquee event of one of New England’s most popular and enduring summer festivals, and Norway Savings Bank is proud to be named its sponsor once again. The 61st Yarmouth Clam Festival is set for July 17 to 19 and headlining the entertainment, food, arts, activities, parade and exhibits along and around Main Street will be the always anticipated Maine State Clam Shucking Contest. “Just about everyone who has come to the festiva…