derive PartialEq and Eq for `ParseCharError`
derive PartialEq and Eq for `ParseCharError`

unlike the other Parse*Error types, ParseCharError didn't have these implemented for whatever reason
GBGamer/rust,graydon/rust,GBGamer/rust,aidancully/rust,GBGamer/rust,aidancully/rust,aidancully/rust,GBGamer/rust,GBGamer/rust,graydon/rust,aidancully/rust,graydon/rust,graydon/rust,GBGamer/rust,graydon/rust,aidancully/rust,GBGamer/rust,aidancully/rust,GBGamer/rust,graydon/rust