Akron’s Stan Hywet Hall and Gardens has added a quest for 2015.So, too, have downtown Barberton and the hamlet of Boston in northern Summit County.Those are the newest quests, or on-foot treasure hunts, for families in place for the 2015 questing season. The outdoor trek has just opened along the Ohio & Erie National Heritage Canalway in Northeast Ohio.There are 41 quests available — although five are shut down temporarily for repairs from winter storm damage.Canalway Questing will continue in Summit, Stark, Cuyahoga and Tuscarawas counties through Nov.