Developer Improvements in go-algorand 3.16

Alongside decreasing round times and improving Smart Contract capabilities , go-algorand 3.16 introduces several significant developer-facing improvements:The ability to control the block timestamp when in devmode. Block timestamp is available from within a smart contract using block 1 (block BlkTimestamp). More Opcode Budget with SimulateA single smart contract on Mainnet can use at most 700 opcode budget. /v2/deltas/{round}/txn/groupThe second endpoint takes as input a transaction ID or group ID and returns the state updates for the corresponding transaction group. /v2/deltas/txn/group/{id}Transaction group state updates are the set of updates made to the ledger as a result of a single transaction group.