Hi, Teobaldo
Thank you for reviewing.

> It would be great if we could open URL like file:/// pages too.
I tried to open a file:/// page and it failed.
However, I think this is ideal behavior. If an add-on can open any local files, malicious developers can read and send all of files which include password, personal data and etc. Of course, my all add-ons do not read any personal data (and it is impossible because I published my source codes on github), yet add-ons must behave like this to protect users, I think.

> Congrats for the extensions! "No permissions needed" is awesome.
This is what I am hoping for all add-ons.

My add-ons have been improved by requesting features. I was glad to receive your requesting even if it could not be realized.