Clean up formatting of 6-digit vs. 8-digit codes. Change QR code generation to use the `qrcode` library instead of a web service.
1.1.1
Minor fixes to the export menu to remove an unused entry. Add the right-click context menu to the README documentation.
1.1.0
Add the ability to generate provisioning URIs and copy them to the clipboard for pasting. Add the ability to display the QR code representation of provisioning URIs. Add the ability to export provisioning URIs in bulk.