rustc-ap-serialize 300.0.0

Automatically published version of the package `serialize` in the rust-lang/rust repository from commit 046e054a995c7b293e26968774ff88b38661cd3c The publishing script for this crate lives at: https://github.com/alexcrichton/rustc-auto-publish
rustc-ap-serialize-300.0.0 doesn't have any documentation.

Support code for encoding and decoding types.