0.9.0

And now for the official release 🎉

This release intentionally tries to stick to mostly the same API as the last release with two major divergences:

1. Our Error type is now a typical ole enum of the different error variants instead of the previous implementation using the (quite dated now) error-chain crate
2. The main slack client slack_hook::Slack is now async based while a blocking client is available at slack_hook::blocking::Slack when the blocking feature is enabled (akin to reqwest)

Other than that everything should be largely the same just with up-to-date dependencies. Expect more features/deprecations/tweaks in upcoming releases

Breaking Changes

• Replace error-chain with a manual implementation #42

Features

• Add an asynchronous client and move the synchronous "blocking" client #47

Docs

• Fix cargo doc warnings #34
• Cleanup Cargo.toml definitions #39
• Cleanup and update README #40
• Document our rust-version #46

Other

• Resolve clippy and rustfmt warnings #31
• Switch CI from Travis to GitHub actions #32
• Update to 2018 Edition #33
• Update outdated dependencies #35
• Resolve warnings #41
• Pull CI back into the modern age #43
• Update reqwest to the latest version #44
• Internal refactoring and test cleanup #45