Add change pedal element for visual diff testing

test/data/OSMD_Function_Test_Pedals.musicxml

@@ -571,6 +571,11 @@
         <type>quarter</type>
         <stem>down</stem>
         </note>
+      <direction placement="below">
+        <direction-type>
+          <pedal type="change" line="yes"/>
+          </direction-type>
+        </direction>
       <note default-x="132.70" default-y="-25.00">
         <pitch>
           <step>A</step>