Add EIP-5805: Voting with delegation

[Amxx]

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[eth-bot]

All tests passed; auto-merging...

(pass) eip-5805.md

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updateEIP

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[Amxx]

We might need to rename the now() function, because of name conflicts with solidity's now keyword (deprecated since 0.7.0 but still raising issues).

Should we go for clock() ?

[frangio]

clock sounds good to me. Another alternative could be tick.

[xinbenlv]

clock sounds good to me. Another alternative could be tick.

Is it the intention of the function now() to represent the current point of time in either timestamp or blocknum?

I feel the tick or clock will all strongly imply timestamp and could cause trouble if contract developers choose to implement blocknum but client interpreting it as timestamp.

I'd brainstorm something like currentPointOfTime(), well that's a bit unfortunately long, please help find better name

[xinbenlv]

Also, realizing snapshot doesn't work at blocknum level. I am proposing #5875 to retrieve TX Num. Wondering if for better security, we should support TX level of voting weight snapshot

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[Amxx]

There is still ongoing discution about this EIP (which IMO should happen on the ethereum magician thread, and not here) ... but I believe the proposal state is sufficient to merge as a draft.

If there is anything preventing that from being merged (as a draft), please let me know what needs to be fixed.

[Pandapip1]

The only rule about the creation date is it can't be in the future.