[META] Berlin implementation

[gumb0]

Possible EIPs

• [ ] EIP-663: Unlimited SWAP and DUP instructions
  • implementation in evmone https://github.com/ethereum/evmone/pull/98
• [ ] EIP-1057: ProgPoW, a Programmatic Proof-of-Work
  • Supported in ethash library, but PoW engine switching logic not implemented yet.
• [x] EIP-1380: Reduced gas cost for call to self
  • [x] LegacyVM https://github.com/ethereum/aleth/pull/5752
  • [x] aleth-interpreter https://github.com/ethereum/aleth/pull/5753
• [ ] EIP-1962: EC arithmetic and pairings with runtime definitions
• [ ] EIP-1985: Sane limits for certain EVM parameters
  • Not sure if anything needs to be done here
• [ ] EIP-2045: Particle gas costs for EVM opcodes
  • implementation in evmone https://github.com/ethereum/evmone/pull/101
• [ ] EIP-2046: Reduced gas cost for static calls made to precompiles
  • [x] LegacyVM https://github.com/ethereum/aleth/pull/5699

Maintenance stuff

• [ ] Ropsten config update
• [ ] Mainnet config update
• [ ] Support Berlin in aleth-vm command line parameters