Cargo Features

rustdoc-types has no features set by default.

[dependencies]
rustdoc-types = { version = "0.33.0", features = ["rustc-hash"] }
rustc-hash

Switch the hashmaps used in rustdoc-types to the FxHashMap from rustc-hash.

This might improve performace if your are reading the rustdoc JSON from large crates like aws_sdk_ec2

Enables rustc-hash