cleanup objects in memory when reseting

LeStorage/StoredCollection.swift

@@ -307,6 +307,7 @@ public class StoredCollection<T: Storable>: RandomAccessCollection, SomeCollecti
     }
     
     func reset() {
+        self.items.removeAll()
         try? FileUtils.removeFileFromDocumentDirectory(fileName: T.fileName())
         if let apiCallsCollection = self.apiCallsCollection {
             apiCallsCollection.reset()