Milestone for v1.11.0 #1674

The hardfork schedule is as follows:
Baobab testnet
Block number: 000000000 (estimated time: __ Aug, 00:00 AM UTC+9)
Hardfork contents: Shanghai hardfork

Hardfork features

• Adjusted gas cost of the COINBASE opcode according to EIP-3651 (#1883)
• Added the PUSH0 opcode to EVM according to EIP-3855 (#1861)
• Adjusted gas cost related to initcode according to EIP-3860 (#1888)
• Relaxed the condition that a contract is created using the CREATE or CREATE2 opcodes (#1904)

Improvements

• Added a new API governance_getRewardsAccumulated to query cumulative block rewards (#1848)
• Added a new API eth_resend to resend transactions with higher gas price (#1894)
• Added a new API klay_forkStatus to query hardfork status (#1804)
• Introduced block range option to the admin_exportChain API (#1873)
• Removed some APIs related to chain configuration and governance. Please use the alternative APIs (#1860)
  • Removed APIs: governance_itemsAt, governance_chainConfigAt, governance_chainConfig, klay_govParamsAt, klay_chainConfigAt, klay_chainConfig, klay_gasPriceAt
  • Alternative APIs: governance_getParams, governance_getChainConfig, klay_getParams, klay_getChainConfig
• Updated some APIs to return detailed error messages upon transaction failure (#1763 #1845)
• Introduced node flags to specify log file location and rotation settings (#1869 #1884)
• Node flags can be specified using a YAML file (#1684 #1905 #1910)
• Added the Live Pruning feature that deletes historic block data in real-time (#1852 #1854 #1859 #1871 #1899 #1902 #1914)
• Added RocksDB support to allow shared storages among nodes (#1855 #1900 #1912)
• Added homi command option to create genesis accounts out of a BIP-39 mnemonic (#1813)
• Updated abigen command to include ABImetadata in the generated files (#1881)
• Added util subcommand (#1691)

Fixes

• Fixed unexpected node startup failures (#1829 #1868)
• Fixed JSON-RPC API bugs (#1847 #1851 #1874 #1878 #1903 #1834)
• Fixed reward distribution logic in service chains with deferredTxFee=false configuration (#1886)
• Fixed the bug where BN always recommends the same PN (#1835)

Miscellaneous

• Added BLS algorithm library (#1824 #1825)
• Added new metrics klaytn_vrank* to collect consensus performance data (#1891)
• Replace the xgo cross compilation system with native builds in each target hosts. (#1862 #1906 #1907)
• Updated the build environment to go1.20 (#1889 #1898 #1901)
• Minor Maintenance (#1629 #1712 #1780 #1805 #1807 #1808 #1816 #1818 #1819 #1821 #1826 #1828 #1838 #1840 #1843 #1846 #1856 #1865 #1867 #1872 #1875 #1876 #1880 #1882 #1887 #1890 #1893 #1895 #1896 #1897 #1909)