basic handicap support

lib/serializer/ESerializationVersion.h

@@ -57,6 +57,7 @@ enum class ESerializationVersion : int32_t
 	SIMPLE_TEXT_CONTAINER_SERIALIZATION, // 847 - text container is serialized using common routine instead of custom approach
 	MAP_FORMAT_ADDITIONAL_INFOS, // 848 - serialize new infos in map format
 	REMOVE_LIB_RNG, // 849 - removed random number generators from library classes
+	PLAYER_HANDICAP, // 850 - player handicap selection at game start
 
-	CURRENT = REMOVE_LIB_RNG
+	CURRENT = PLAYER_HANDICAP
 };