sct 0.4.0

# SCT.rs
SCT.rs is a certificate transparency SCT verifier in rust.
It uses [*ring*](https://github.com/briansmith/ring) for cryptography.

[![Build Status](https://travis-ci.org/ctz/sct.rs.svg?branch=master)](https://travis-ci.org/ctz/sct.rs)
[![Coverage Status](https://coveralls.io/repos/github/ctz/sct.rs/badge.svg?branch=master)](https://coveralls.io/github/ctz/sct.rs?branch=master)
[![Documentation](https://docs.rs/sct/badge.svg)](https://docs.rs/sct/)
[![Crates.io](https://img.shields.io/crates/v/sct.svg)](https://crates.io/crates/sct)

# Status
Ready for use:

- All intended features are implemented.
- Tests achieve 100% line coverage and all reachable branches.

# License
SCT.rs is distributed under the following three licenses:

- Apache License version 2.0.
- MIT license.
- ISC license.

These are included as LICENSE-APACHE, LICENSE-MIT and LICENSE-ISC
respectively.  You may use this software under the terms of any
of these licenses, at your option.