Reward all those who have voted 5% of Delegator Rewards

Voting and governance is important. People who take time to read proposals and cast votes deserve to be rewarded.

As per YIP-15: Delegator Reward Modification (https://snapshot.page/#/yam/proposal/QmSUbZ7zMs2nJ8iemVpDDEtpUWqpGuu3zE7zdozAxCvzjF) Total Delegator Rewards are set at 332,665 YAMv3.

This proposal is to carve out 5% of those rewards and provide them to every account which has cast a vote on any YAM Finance proposal prior to the time THIS proposal goes live (Aug 30, 2020, 2pm UTC).

All accounts that have previously cast a vote will equally share in the 5% carve out.