TryFrom for IpNumber

[skeggse]

Just a mild convenience: TryFrom/try_from for u8 -> IpNumber, to avoid having to pull something else in!

[JulianSchmid]

Hi,

Thanks for the PR & sorry that I am so slow to react.

I actually would prefer to replace the IpNumber enum with a simple struct (see #51 ) in a future release. I will update the ticket as soon as this happens.

Greets
Julian

[JulianSchmid]

Resolved by #51