3.0.0

This release fixes an issue that prevents schedule changing and rewrites the config code to use SQLite instead of JSON.

Note for those updating from an older version:
Your settings are not migrated to v3.
I will try my best to provide database migrations from this point onwards.

Note for macOS users:
macOS may prevent you from opening the app normally.
This is because the app isn't notarized, as I don't have an Apple Developer license to notarize the app with.
To work around this, try opening the app, then go to Settings > Privacy and Security > click Open Anyway.