Adopt new WebKit API

[Eitot]

WKWebView isInspectable allows users to use Safari's developer mode to inspect Vienna's web views in release builds. Before this commit, only developer/debug builds were inspectable. _developerExtrasEnabled is not equivalent, it adds menu items to the context menu when invoked from one of Vienna's web views. I have left it there for ease of developing.

WKPreferences isElementFullscreenEnabled is equivalent to _fullScreenEnabled (in the WebKit source code, they invoke the same methods), despite the different name.

[Eitot]

GitHub Actions still does not support macOS 13. This means that Xcode 14.3 (which requires macOS 13) won't be supported until that happens.

[barijaona]

GitHub Actions still does not support macOS 13.

They probably still have a bunch of 2014 MacMini's in their servers racks 😄

[josh64x2]

GitHub Actions still does not support macOS 13. This means that Xcode 14.3 (which requires macOS 13) won't be supported until that happens.

It won't be too far off actions/runner-images#6426 (comment)

[barijaona]

It's probably better to wait GitHub Actions' support of macOS 13 before merging this.

[Eitot]

I don't mind. I was looking for a way to keep the project buildable with Xcode 14.2, but Swift has only limited support for compiler/preprocessor directives (MAC_OS_X_VERSION_MAX_ALLOWED would have been a way in Objective-C).

[barijaona]

Excellent news: https://github.blog/changelog/2023-04-24-github-actions-macos-13-is-now-available/