v0.29.0

What's Changed

• Add slack message attachments by @fussybeaver in #97
• fix get_permalink response struct by @noxasaxon in #98
• Update Rust crate tokio-tungstenite to 0.17.1 by @renovate in #96
• URL strong type in models and API by @abdolence in #99

Migration notice

Url type was introduced in many models such as SlackResponseUrl, SlackWebSocketsUrl, SlackTeamUrl and also API for Webhooks (docs/examples now also available!).

Full Changelog: v0.28.0...v0.29.0