Fixed some bugs and added new features that came up while testing:

- Check for allowed card type was before the check for the mau cards, which caused incorrect cards to be played and mau cards to be passed to wrong players
- Ending with a special card is now a faulty move, which grants the player 5 fault cards now
- Grabbed cards could be registered as playable as it didnt include next allowed card type
- If the first card is a joker, set the next allowed card type to a random other card type to prevent an instant softlock
- Other cleanup :)

Mau/Card.cs

@@ -31,22 +31,37 @@ public static class CardExtensions
     {
         return card1.IsSameCardType(card2) && card1.IsSameCardValue(card2);
     }
-    
+
     public static bool IsSameCardType(this Card card1, Card card2)
     {
         return card1.CardType == card2.CardType;
     }
-    
+
     public static bool IsSameCardValue(this Card card1, Card card2)
     {
         return card1.CardValue == card2.CardValue;
     }
-    
+
     public static bool CanBePlayedOn(this Card playedCard, Card currentCard)
     {
         return playedCard.IsSameCardType(currentCard)
-            || playedCard.IsSameCardValue(currentCard)
-            || playedCard.CardType == CardType.JOKER;
+               || playedCard.IsSameCardValue(currentCard)
+               || playedCard.CardType == CardType.JOKER;
+    }
+
+    public static bool IsSpecialCard(this Card card)
+    {
+        return card.IsMauCard() || card.CardValue is
+            CardValue.SEVEN or
+            CardValue.EIGHT or
+            CardValue.JACK or
+            CardValue.KING or
+            CardValue.ACE;
+    }
+
+    public static bool IsMauCard(this Card card)
+    {
+        return card.CardType == CardType.JOKER || card.CardValue is CardValue.TWO;
     }
 }