Add ability to export/import settings

[shbach]

There is a lot of configurable options available in this extension and when I install this extension on another computer/browser, it's a bit of work to replicate my preferred settings. It would be great if there was some sort of settings export/import option to make that easier to do.

[lawrencehook]

Good idea! I'll add it to my list

[lawrencehook]

Just released a new version (4.3.18) with import/export.

Thanks again for the feedback