Add support for range for the `delay` paramater:
---
@param [delay]
A value to match against the delay. Can be a single value for exact match,
or a range:
- `min-max`: matches if delay >= min and delay <= max
- `min-`: matches if delay >= min
- `-max`: matches if delay <= max
No delay means to match any delay value.
Prepend with `!` to reverse the match condition.
---
As discussed with filter list maintainers.
