Rust-Bitcoin IO Library

The std::io module is not exposed in no-std Rust so building no-std applications which require reading and writing objects via standard traits is not generally possible. Thus, this library exists to export a minimal version of std::io's traits which we use in rust-bitcoin so that we can support no-std applications.

These traits are not one-for-one drop-ins, but are as close as possible while still implementing std::io's traits without unnecessary complexity.