Proposal to activate EIP-98 and EIP-210

[varasev]

I reviewed the EIPs list in https://github.com/paritytech/parity-ethereum/blob/v2.6.4/ethcore/src/spec/spec.rs#L275-L355 and found that we hadn’t activated old EIP-98 and EIP-210 in our networks (Sokol/Kovan/Core/xDai).

According to the code in Parity client, these EIPs are not activated by default.

I think we need to consider their activation as well, but do that on Sokol network first, and after that try to sync some test Sokol node from scratch to ensure everything is fine with that.

@phahulin Maybe there was some strong reason of why those EIPs weren't activated initially when Sokol and Core networks started?

[phahulin]

I don't think there was a strong reason, we probably based our spec on kovan's.