TrueGrid MIDI fixed

I think there may be only two people in the world who use this, but for those I can happily report that the TrueGrid MIDI feature is working again!
As a reminder how to get it going:

• it still only works in Google Chrome
• you have to check the Enable Web MIDI API option by typing chrome://flags in your browser address bar
• make sure your MIDI interface is connected and running BEFORE you start the browser
• if in doubt restart the browser
• browse to TrueGrid (MIDI)/Growling MIDI Bass
• select the MIDI port at the bottom of the screen

I had weird fun connecting TrueGrid with my Octatrack...