v2.0.0

UPDATES

15th March 2022: This release is NOT recommended since it contains a security vulnerability in the `transfer` application. Please use version >= 2.1.0 .

Please read the migration doc , which provides information on updating from v1 to v2.

Dependencies

• #489 Bump Tendermint to v0.34.14

• #503 Bump SDK version to v0.44.3

API Breaking

• (core) #227 Remove `sdk.Result` from application callbacks.

• (transfer) #350 Change `FungibleTokenPacketData` to use a string for the `Amount` field. This enables token transfers with amounts previously restricted by `uint64`. Up to the maximum `uint256` value is supported.

Features

• #384 Added `NegotiateAppVersion` method to `IBCModule` interface supported by a gRPC query service in `05-port`. This provides routing of requests to the desired application module callback, which in turn performs application version negotiation.

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 .