USBODE v2.20.1 RC6.1

What's Changed

• Add discart support by @danifunker in #173
• Fixed upgradestatus error reporting by @danifunker in #174

Full Changelog: v2.19.0...v2.20.1

This is a minor hotfix that displays upgrade errors when they happen. Be aware this version must be applied first prior to seeing informative upgrade error messages.