Some files in the repository are missing newlines at the very end, as pointed out by @nrbrook in #1026

Classes/CocoaLumberjack.h was specifically mentioned, but there could be other files that are missing this as well.

Is your feature request related to a problem? Please describe.
CI workflow still uses Xcode 11.7 https://github.com/SwifterSwift/SwifterSwift/blob/master/.github/workflows/CI.yml

Describe the solution you'd like
We should update both CI to use the latest available Xcode.
Together all project things that needs updating also.

Describe alternatives you've considered
A clear and

We could write a unit test for this, like

include (if not already) Driver.cs in mtouch-tests project
ensure options are initialized (which might require a bit of refactoring)
unit test to scan all descriptions and ensure they ends with a .

xamarin/xamarin-macios#9621

Hello there! It looks like it's not marked with @objc, so it's not possible to cancel operation from Objective-C code.

Hi

So that extension on NSImage on macOS makes a blank image and has a placeholder input string to maybe do something with in the future or...?

Thanks in advance.