* Make `GHRepo::from_str` and `impl serde::Deserialize for GHRepo` only accept strings of the form `{owner}/{name}` * Give `GHRepo` a dedicated method for parsing from a GitHub repository URL * Give `GHRepo` a dedicated method for parsing from either a URL or a repository spec * Add a function for use in `#[serde(deserialize_with)]` that deserializes `GHRepo` values only from GitHub repository URLs * Add a function for use in `#[serde(deserialize_with)]` that deserializes `GHRepo` values from either URLs or repository specs
