Great add-on. I love the simplicity of it. It's got some legs now that it's one of the few that works well with Quantum. A little polish here and there and a few feature adds (e.g. custom keyboard shortcut, ability to disable/change notifications in options vs about:config) and this could become the de facto shortener for Firefox.
Thank you for the kind review! Good suggestions (I'll track some of them here https://github.com/fwenzel/copy-shorturl/issues ). I do not understand what you mean by about:config, all available options exist in the add-on preferences.
