Telos WP#28 delivered

The Telos WPS proposal #28 has been delivered. The scope was to develop additional features in Chronicle and Light API, as follows:

• Chronicle has 3 new message types (PERMISSION, PERMISSION_LINK and ACC_METADATA) which deliver account permissions and smart contract updates. Also a few bugfixes and improvements were added.
• LightAPI is now only relying on table deltas, and no longer on transaction traces. This allows spinning up an API node quickly from a portable nodeos snapshot, so overall availability of the API will increase. The previous version required a full scanning of history, and it would take more than a month for EOS and a few days for Telos.
• LightAPI is delivering REX balances (valuated in system token) for those accounts which deposited in REX. This information can be readily displayed in wallets for a better user experience.