Browser auto select 3

[GRbit]

Hi @properlypurple !

Thank you for starting this awesome tool! It was great to find it, cause it solved a very annoying problem for me.

The main reason I've created a PR is to allow other users to set "default" browsers for some domains, which saves me a lot of time every day.

Hope you'll like it, but if not, feel free to share any feedback, I'll try to change the code the way you like.