Restoid v0.4.0

• Added support for remote repo backends: SFTP, S3, HTTP REST Server
• Operations like backups etc will now work properly when the app is in the background. This may require disabling battery optimizations in app settings
• You can now cancel ongoing operations like backup
• Fixed forget task in maintenance not deleting old backups
• Entering a wrong password now allows you to retry without restarting the app
• UI improvements, better consistency across screens
• Fixed unintended Restic update checks in bundled flavor
• Fixed tapping on progress notification not opening the operation screen