Gnome-shell 3.16 is out. I tried to add the version number to the array in metadata.json, but this is not sufficient to make it run. Loading the extension fails with the message
Extension "window_buttons@biox.github.com" had error: Error: Expected type interface for Argument 'file' but got type 'string'
Unfortunately, it does not tell on which code line the error occurred.
Gnome-shell 3.16 is out. I tried to add the version number to the array in metadata.json, but this is not sufficient to make it run. Loading the extension fails with the message
Unfortunately, it does not tell on which code line the error occurred.