v0.4.2: reduced amount of allocations occurring when frames are drawn

SPD-classes/src/main/java/com/watabou/utils/PointF.java

@@ -151,4 +151,11 @@ public class PointF {
 	public String toString() {
 		return "" + x + ", " + y;
 	}
+
+	@Override
+	public boolean equals(Object o) {
+		if (super.equals(o))
+			return true;
+		return o instanceof PointF && (((PointF)o).x == x && ((PointF)o).y == y);
+	}
 }