- Removed OnlineAccountsMessage and GetOnlineAccountsMessage (no longer any need for backwards support).
- Added OnlineAccountsV3Message and GetOnlineAccountsV3Message.
- Mempow computations can be opted in early via the "onlineAccountsMemPoWEnabled" setting (although they won't be validated).
- Feature trigger timestamp set to unknown future date.
- Still needs calibration on a testnet.
- Still need to uncomment/finalize code to calculate "next" signature ahead of time.