* Cache RLP and header hashes. * Refactor header - WiP * Avoid decoding laster header. * Pre-compute hashes for Sealed/Locked block. * Use accrue bloom. Closes ##8241
* Cache RLP and header hashes. * Refactor header - WiP * Avoid decoding laster header. * Pre-compute hashes for Sealed/Locked block. * Use accrue bloom. Closes ##8241