Emergency shelters kept hundreds out of the elements this winter in Cedar Rapids and Iowa City, and local service agencies are aiming to build on those successes.“By most measures, it was definitely a successful initiative again this year,” said Crissy Canganelli, executive director of Shelter House in Iowa City. “We know we provided a safe, secure and warm place for people to go.”Canganelli said the emergency shelter at 1925 Boyrum St., which was open from Dec.