- Remove optional permissions in safari for now due to safari bug
- This may break custom server urls for some people on Safari, but the bug is making the extension unusable on Safari due to permission prompts appearing on many websites when they should not (since they are optional permissions, they should only appear when then extension asks for them)
- https://bugs.webkit.org/show_bug.cgi?id=290508
- Add some more improvements for reliability of thumbnail replacing logic to avoid thumbnails getting hidden due to YouTube page changes