Extend to cope with double + float

Sources/StORM/Extract.swift

@@ -43,6 +43,12 @@ extension StORM {
 		// Double
 		// =======================================================================================
 		public static func double(_ data: [String: Any], _ name: String, _ def: Double? = Double()) -> Double? {
+			if let d = data[name] as? Float {
+				return Double(d)
+
+			} else if let d = data[name] as? Double {
+				return d
+			}
 			return Double((data[name] as? Float) ?? Float(def ?? 0.00))
 		}