Multiple devices

Fixed a big issue when using multiple devices on 1 stream deck page.

Release 1.2

• Sending note off messages when stream deck button is released (closes #5 )
• Only open and close devices when needed (closes #4 )

Device list fix

Hopefully, this releases fixes the issue with the device list being empty.

Please note that this release is built for Win64.

Release v1.05

First release.