This allows us to use:
(1.26)
- impl Trait
- autoderef in pattern matching
- fixed slice patterns
- inclusive ranges
(1.27)
- dyn Trait
- #[must_use] on functions
To prepare for edition change, dyn is added where applicable. Other
edition changes would require bumping the requirement even higher,
and so they are not applied for now.
Each given NDISC packet type may only include one of a few options.
Instead of including the options in the NDISC repr as a &[u8] include
the packet types available options as `Option<T>`.
Closes: #194
Approved by: whitequark
Dario Nieuwenhuis
Alex Crawford
whitequark
Dan Robertson