Prepare release infra for 1.0

[nedtwigg]

• we got rejected for not really needing the tabs permission
  • turns out they're right!
  • https://developer.chrome.com/docs/webstore/troubleshooting#misunderstood-perms-tabs

• This permission ONLY grants access to the url, pendingUrl, title, or favIconUrl properties of Tab objects.
• When is it required?
  • When an extension does not have broad host access, but needs to be able to read sensitive data like the URL of an arbitrary tab.
• When is it NOT required?
  • When using methods on the tabs API.
  • When the extension has access to broad host permissions. Host permissions grant the extension access to the same > data as well as other capabilities.