Features

The relayer supports the following:

creating IBC connections
creating IBC transfer channels.
initiating a cross chain transfer
relaying a cross chain transfer transaction, its acknowledgement, and timeouts
relaying from state
relaying from streaming events
sending an UpgradePlan proposal for an IBC breaking upgrade
upgrading clients after a counter-party chain has performed an upgrade for IBC breaking changes
fetching canonical chain and path metadata from the GitHub repo to quickly bootstrap a relayer instance

The relayer currently cannot:

create clients with user chosen parameters (such as UpgradePath)
submit IBC client unfreezing proposals
monitor and submit misbehavior for clients
use IBC light clients other than Tendermint such as Solo Machine
connect to chains which don't implement/enable IBC
connect to chains using a different IBC implementation (chains not using SDK's x/ibc module)

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