Enabled checking of note boundaries for noteOn events.

MicroDexed.ino

@@ -650,6 +650,7 @@ void handleNoteOn(byte inChannel, byte inNumber, byte inVelocity)
   {
     if (checkMidiChannel(inChannel, instance_id))
     {
+      if (inNumber >= configuration.dexed[instance_id].note_start && inNumber <= configuration.dexed[instance_id].note_end)
         MicroDexed[instance_id]->keydown(inNumber, inVelocity);
     }
   }