v1.0.0-RC1

This release contains an entire re-implementation of zio-slack. It rethinks the design from the ground up and drastically improves the DX for building slack integrations (powered by innovations from ZIO2 and all the contributors there!).

What's Changed

• Updated with dozens of new methods from slack (including the call API and schedule messages)
• Removal of the deprecated RTM interface in favor of the new socket mode api
• New unified API structure, all methods now live under a single Slack type which can be used either directly or via service injection
• New modular API for constructing methods that are missing and for testing components without a live slack server
• New typesafe authentication methods prevent accidentally forgetting to supply access tokens
• Better enumeration of slack response types including proper propagation of rate limit errors