Issue title: Safari extension
 Issue body: I'm currently using Timimi with Firefox on macOS and it works great. Thank you!

I would just like to register my interest in a Safari extension as well since that's my primary browser on macOS.
 Comments: 
 Comment 0: Chrome port takes first priority. I must admit safari port will only come after that. 
 Comment 1: Have you heard of [UserScripts](https://userscripts-mirror.org/index.html)? It can be used to run browser extensions with JavaScript.
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