* Update to Swift 5.0 and run `swiftformat`.
* Refactor `MediaKeyTap` start/restart.
* Remove useless comments.
* Reorder files.
* Add German translation.
* Switch to Carthage.
* Use `DDC.swift`.
* Add `NSScreen` extension.
* Simplify menu layout.
* Hide the display’s built-in OSD.
* Fix launch at login helper.
* Fix `quitClicked` connection.
* Refactor build phases.
* Use `os_log` instead of `print`.
* Use more specific check for `minReplyDelay`.
* Add whitelist.
- Key handling is now done in the app, close#3
- All code linted with SwiftLint, close#4
- Better handling of built-in screen
Signed-off-by: Guillaume Broder <iamnotheoneyouseek@gmail.com>