* uint256 in rlp
* uint256 rather than big.Int in Transation
* linters
* more linters
* still linters
* Reduce garbage in writeUint256
* Experiment with GC in writeByteArray
* core/vm/runtime: add test for blockhash
* core/evm: less iteration in blockhash
* core/vm/runtime: nitpickfix
Co-authored-by: Péter Szilágyi <peterke@gmail.com>
Environment is now a struct (not an interface). This
reduces a lot of tech-debt throughout the codebase where a virtual
machine environment had to be implemented in order to test or run it.
The new environment is suitable to be used en the json tests, core
consensus and light client.