Copying/pasting this from tendermint/tmkms#286 as reported by @devashishdxt

In tendermint/tendermint#3643, tags were changed to events (event now have an event_type and a list of tags). This change will affect RPC calls such as /block_results (https://github.com/tendermint/kms/blob/master/tendermint-rs/src/abci/responses.rs#L71).