This allows for less version checks and further modernisation of the app.

Questions:

• Xcode recommends to enable some warnings. Given the age of the code base, I suspect it'll require quite some work to satisfy the compiler. Even though this will make the code base much stricter, I'd actually do this to prevent running in to trouble later.

Related issues:

• Replace use of deprecated WebView with WKWebView #37, since WebView is deprecated as from 10.14