Any chance adding support for creating new tabs with “about:” protocol?
It’s been pointed out to me that this is working in Chrome:
browser.tabs.create({url: 'chrome://extensions/'});
browser.tabs.create({url: 'chrome://downloads/'});
Is there a reason not to support Firefox equivalents of these in add-ons?
It’s not like user can be hacked just by opening these… 
And there are plenty of add-ons that could use this, like bookmarks / toolbars / speed-dials / tab managers / session managers…