Returned GetIdentifier as deprecated method

Author: IngoHHacks

Models/Identifiers/AbilityIdentifier.cs

@@ -1,3 +1,4 @@
+using System;
 using System.Collections.Generic;
 using DiskCardGame;
 
@@ -17,6 +18,12 @@ private AbilityIdentifier(string guid, string name)
 			ids.Add(this);
 		}
 
+		[Obsolete("GetIdentifier is deprecated, use GetID instead")]
+		public static AbilityIdentifier GetIdentifier(string guid, string name)
+		{
+			return GetID(guid, name);
+		}
+
 		public static AbilityIdentifier GetID(string guid, string name)
 		{
 			return ids.Exists(x => x.guid == guid && x.name == name)