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Use expected errors instead of boolean values for 29fee

RecvPacketResult should be defined using protobuf

Use expected errors instead of boolean values for ica host tests

Use expected errors instead of boolean values for ica controller tests

Use expected errors instead of boolean values

Make counterparty prefix non-nullable

Use client and counterparty terminology in packet server rather than channel

Check SendPacket codecov

Cleanup eureka event emission

Address custom prefix todo

Address logger todo

Add godoc for keeper functions in packet-server

Use expected errors in `TestPacketValidateBasic`

Add tests for MsgProvideCounterparty

Require non-empty app version for eureka packets

Break API of `NewPacket` constructor to add protocol and app versions

add convenience func to reverse callbacks and refactor other methods

Remove 03-connection layer

Add delay period to tendermint client

Change packet key to support efficient iteration in v2

Disallow app version to be specified if the packet protocol version is V1

Add tests for BuildMerklePath

Encapsulate logic to retrieve handler and module based on protocol version

Add CLI query to return `Counterparty` for a given client identifier

Add gRPC query for `Counterparty` for a given client identifier

Add CLI to submit tx with `MsgProvideCounterparty`

Remove capabilities

Refactor test flow for message server

Do not look-up channel twice in Timeout flows

Application callback testing should rely on individual callback rather than full stack