« Previous: fix A@title selector

It was copy-pasta gone wrong. Because next.js does not use "exclusions", the title selector
did not take those into account. This lead to selectors like `a[title="OLDER!FOLDER"]`.
« Previous: fix unwanted exclusions by ed23e13

The fix in 7abc5cc was incomplete because it only fixed it in one place.
Time to refactor?
« Previous/Next »: experimentally support "<", ">"

"Experimentally", because they might trigger too many false positives.
We'll see.
Next »: fix A@title selector comment

Copy it from prev.js in 685bbd1.
Readable++: improve clearing timeouts/intervals