Minor update to add midi continue support.
- Added two new params; midi continue device and midi continue mode
- Midi continue device lets you choose which device to listen for "continue" messages from; This allows you to choose a different midi device for "continue" messages than the device you're sending midi out messages to
- Midi continue mode lets you choose if new "continue" messages always start playback or toggle so you can use it as a play/pause button
- Grouped new params in "midi continue" group