Raise errors if the underlying object is used after it's been closed
Raise errors if the underlying object is used after it's been closed

fulcrumapp/shp-ruby,fulcrumapp/shp-ruby,spatialnetworks/shp-ruby,spatialnetworks/shp-ruby,fulcrumapp/shp-ruby,spatialnetworks/shp-ruby,spatialnetworks/shp-ruby,fulcrumapp/shp-ruby,spatialnetworks/shp-ruby,fulcrumapp/shp-ruby