Byzantium release

[mkalinin]

• EIP-100 Change difficulty adjustment to target mean block time including uncles | EIP-100 add uncles adjustment to the difficulty #916
• EIP-206 REVERT instruction in the Ethereum Virtual Machine | Eip 206: add REVERT opcode #918
• EIP-213 Precompiled contracts for addition and scalar multiplication on the elliptic curve alt_bn128 | EIP-213 precompiles for BN128 addition and scalar multiplication #924
• EIP-212 Precompiled contract for pairing check | EIP-212 implement Ate pairing check #933
• EIP-198 Precompiled contract for bigint modular exponentiation | EIP-198 implement a precompile for modular exponentiation #920
• EIP-211 New opcodes: RETURNDATASIZE and RETURNDATACOPY | Eip 211: New RETURNDATASIZE and RETURNDATACOPY opcodes #919
• EIP-214 New opcode STATICCALL | Eip 214: new STATICCALL opcode #922
• EIP-649 Metropolis Difficulty Bomb Delay and Issuance Reduction | Eip 649: Difficulty Bomb Delay and Issuance Reduction #927
• EIP-658 Embedding transaction return data in receipts | Eip 658: Embedding transaction return data in receipts #928
• EIP-684 Prevent overwriting contracts | Eip 684: Prevent overwriting contracts #932
• Fix BlockchainTests/TransitionTests execution
• Add BlockchainTests/GeneralStateTests execution
• 100% TCK tests passing

[lyless]

hello. i want to make sure my program is ready before hard fork happen. i do not know when hard fork will be happen. may be Sept. 22nd ? is there a release version will be released for ethereumj or i will merge the each change to my program manually? if i do not update the ethereumj when hard fork happen, ethereumj will hang in some blog can not receive the new block?