Propsal changes to methods in SessionID

[chungwong]

At this moment, SessionID has

pub fn inner(&self) -> String

pub fn uuid(&self) -> Uuid

I believe most of the time, what inner means it the type inside. However, it is not that case for SessionID.

Does it make sense if SessionID has the following instead?

pub fn to_string(&self) -> String

pub fn inner(&self) -> Uuid

[genusistimelord]

You are correct, I do have them backwards XD. If you like, I would accept a PR to change those. just make sure to add in the Readme the changes =3