AdonisWindow maximise/restore button icon self-update

[DoctorLogiq]

Hi, first of all thank you for this fantastic resource, it's an absolute time-and-eye-saver... dark themes are a necessity for survival!

It appears, however, that the maximise/restore button in the window control box of an AdonisWindow doesn't update when the WindowState changes, and I think it would be really nice to see the "restore down" icon when the window is maximised, and of course the "maximise" icon otherwise. Currently I only see the "maximise" icon.

[benruehl]

Thanks for reporting this!

It used to work just fine, so it seems to got broken somehow.
I will take a look at this.