v0.6.0: increased the minimum size of ring rooms

ring passage width is now always at least 2

core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/levels/rooms/standard/RingRoom.java

@@ -29,12 +29,12 @@ public class RingRoom extends StandardRoom {
 	
 	@Override
 	public int minWidth() {
-		return Math.max(super.minWidth(), 5);
+		return Math.max(super.minWidth(), 7);
 	}
 	
 	@Override
 	public int minHeight() {
-		return Math.max(super.minHeight(), 5);
+		return Math.max(super.minHeight(), 7);
 	}
 	
 	@Override