Update clippy lints

[ratmice]

In the second patch, using MIN/MAX I believe these all occur within, because it only appeared with cargo clippy --all-targets.

[ratmice]

Formatting error, will need a squash.

[ratmice]

Oh, I also meant to mention there are a few places where this uses T::min_value() and T::max_value() still.
Unfortunately there doesn't appear to be a num_traits trait with the appropriate associated consts

[ltratt]

Please squash.

Oh, I also meant to mention there are a few places where this uses T::min_value() and T::max_value() still. Unfortunately there doesn't appear to be a num_types trait with the appropriate associated consts

C'est la vie, I suppose!

[ratmice]

Squashed.