AeroMIDI and Gesture support

AeroMIDI uses Leap Motion "Gestures" which just recently got phased out of the Leap Motion driver software.

Please go to the Leap Motion site and download version 3.2.1 of the Leap Motion SDK.

https://developer.leapmotion.com/releases

Then go into the settings for Leap Motion and ensure that 'auto-updates' are turned off.