• Fix dark mode detection when using auto-switching for dark mode (#20)

• Fix building on Apple Silicon 2c458c2

Breaking

• Users on macOS 10.13 or earlier now needs to download the Swift runtime support libraries
  If you're on macOS 10.13 or earlier, just stay on dark-mode v2.0.1, which is functionally identical.

Make the build script work on macOS 10.10

Rewritten in Swift and fixes the issue with corrupting the dark mode setting (#3). 0277309

Note that the commands have changed, so take a look at dark-mode --help or the readme before using it.

If you have used the previous version, I would recommend downloading Panda.app, right-clicking its menubar icon and selecting "Reset Dark Mode Settings". This will fix the corruption so this new version and the System Preferences setting can work properly.