v3.0.0-rc1

This release includes v1 of the Interchain Accounts application module. 🍾
This is the first major feature addition since the v1.0.0 release of ibc-go. 👏
Kudos to everyone that has contributed to this feature on protocol design, implementation, testing and auditing. 🙏
Shout-out to the team at Chainapsis for the brilliant work that kick-started everything. 🌟
And last but not least, we want to thank @seantking for leading the efforts to bring all this to fruition.🥇

At a high level, when comparing to v3.0.0-rc0 this release:

• bumps the version of ics23/go to v0.7.
• adds a function InitModule to the interchain accounts AppModule. This function should be called within the upgrade handler when adding the interchain accounts module to a chain. It should be called in place of InitGenesis (set the consensus version in the version map).
• adds support for base denoms with slashes.
• classifies client states without consensus states as expired.

Please see the CHANGELOG for the full set of changes included in this release.

Please read the migration doc, which provides information on updating from v2 to v3.

Special thanks to our external contributors on this release: @timlind

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To learn more about ibc-go versioning, please read our RELEASES.md.

IMPORTANT: Please read the migration guides for any versions of ibc-go that you might be going through when upgrading to this version. For example: if you upgrade from the IBC module contained in the Cosmos SDK 0.42.0 to SDK v0.44.3 and ibc-go v2.0.0, please follow the migration from SDK 0.41.x or 0.42.x to the IBC module in the ibc-go repository based on the SDK v0.44.x AND the migration from ibc-go v1 to v2.