Improved discoverability in Spotlight

- Added Calendar event (iCal) QR code format

- Modernised UI and app icon

- Fixes for share extension

* Added support for vCard QR codes * Performance improvements

New input modes for specific QR code formats: * Email: you can pre-fill email recipients, cc/bcc, subject and body. When this QR code is scanned, the device opens the default mail app and composes an email with the given information. * Call: generates QR code that triggers a phone call when it's scanned. * Text message: pre-fill the receiver and the body of the message. Scanning this QR code opens the default text messaging app. * WiFi: allows sharing WiFi network credentials as a QR code. * Geolocation: produces QR code that opens the default Maps app on the selected location when scanned.

* Minor refinements

Improved app's discoverability in Spotlight

* Added Save and Copy menu items

- Minor changes for the latest macOS

- Added saving the last used options

- Now you can save QR code in SVG format - Minor improvements in UI

- Minor UI improvements - Added Simplified Chinese localisation (thanks to Johnwii)

- Fixed some bugs - Added an option to send a small donation to the developer

- Added an option to edit QR code text from Safari popup - Improved QR code generation speed

- Fixed localisation issue in Safari extension - Reduced "blinking" effect