Implement SLIP10

[survived]

Implemented the library according to the specs

[maurges]

Might have to change the name, slip10 already exists: https://docs.rs/slip10/

[survived]

Oh I didn't check it. We'll need to come up with another name

[maurges]

All the maths look right to me

[maurges]

cargo test --lib --tests from workflow runs zero tests

[survived]

cargo test --lib --tests from workflow runs zero tests

Fixed

[maurges]

What is the error?

Doctests fail to build without --all-features. Nothing major turns out.