Readd some PartialEq and Hash derives used by Clippy
Readd some PartialEq and Hash derives used by Clippy

graydon/rust,graydon/rust,aidancully/rust,graydon/rust,aidancully/rust,graydon/rust,aidancully/rust,aidancully/rust,graydon/rust,aidancully/rust,aidancully/rust,graydon/rust