Notification to proxies when their voters change vote

[conr2d]

Can you elaborate the rationale of #173?

Nowadays, it's inevitable that many proxy accounts distribute their earnings to their voters. However, changing vote cannot be caught by notification, so observing and updating state cannot be achieved on-chain, but it needs off-chain solution.

It would be better, if changing vote is notified to a proxy (when the target itself of vote is not changed, but vote weight changes, eosio::delegatebw or eosio::undelegatebw) or both old and new proxies (when they are different, eosio::voteproducer).

[tbfleming]

Notification allows the proxy to assert, aborting the transaction and preventing the voter from making the change.

[conr2d]

@tbfleming Ah, I missed that. Thank you for replying.