v0.10.0

This is the first release compatible with Rocket v0.5.0, and the first to make use of async.

What's Changed

• Make fairing asynchronous by @sd2k in #4
• Add standard metrics getters by @IvashchenkoSerhii in #19

New Contributors

• @IvashchenkoSerhii made their first contribution in #19

Full Changelog: v0.9.0...v0.10.0