firmware release 1.2

fixed MSboard, game class prep, power impr.

src/buttons.cpp

@@ -48,6 +48,20 @@ bool anybutton(void)
   return false;
 }
 
+bool anyButtonChanged(void)
+{
+  handleButtons();
+  for (auto &&i : buttonlist)
+  {
+    if (i->isChanged())
+    {
+      return true;
+    }
+  }
+  return false;
+}
+
+
 bool buttonIsPressed(e_ledcolor index)
 {
   c_button *thisbutton = getButton(index);