Finicky 3.1.3 - Bug Sur compatibility

This is a another small release to fix some compatibility issues with macOS Big Sur. It is also built for Apple Silicon though no attempts at testing it on that platform are available to me.

Features:

• #133 - Open config menu item from menu Thank you @leonspok!

Bug fixes:

• #146 - Finicky didn't appear as a default browser choice in macOS general preferences
• #140 - When using VS Code sometimes the configuration file appeared to be empty when reloaded

Thank you to @MartinWe13, @alejandroivan, @xiaobq, @jeff-dagenais and @dndrsn for submitting issues and helping with troubleshooting!