Greasy Fork镜像

No code change.
Change title and update description to clarify original version and credit original author JustDaile.

bug fix

improve intro skip

bugfix: skip intro for same video, eg browser back action

bugfix

bug fix: background tab skip
bug fix: skip intro bug

refactor code and fix bug

improved intro skipping

minor fix

replaced channel switch detection logic : use fetch() instead of the arbitrary 5s stale data countdown

minor ui update

bugfix skipintro when switching channel: increase grace period from 3s to 5s; if staledata selectors.stream.unbind("timeupdate")