added HasSubType and NotSubType factory method

src/magic/model/condition/MagicConditionFactory.java

@@ -55,6 +55,22 @@ public class MagicConditionFactory {
             }
         };
     }
+    
+    public static MagicCondition HasSubType(final MagicSubType subtype) {
+        return new MagicCondition() {
+            public boolean accept(final MagicSource source) {
+                return source.hasSubType(subtype);
+            }
+        };
+    }
+    
+    public static MagicCondition NotSubType(final MagicSubType subtype) {
+        return new MagicCondition() {
+            public boolean accept(final MagicSource source) {
+                return source.hasSubType(subtype) == false;
+            }
+        };
+    }
 
     public static MagicCondition HandAtLeast(final int n) {
         return new MagicCondition() {