message: governor.sol; reduce voting time for faster blocks
  xDai has a lower block update time of ~5 seconds, so adjust the
  estimated voting period to reflect this
diff: @@ -54,7 +54,7 @@ contract Governor {
  function votingDelay() public pure returns (uint) { return 1; } // 1 block
  /// @notice The duration of voting on a proposal, in blocks
  - function votingPeriod() public pure returns (uint) { return 17280; } // ~3 days in blocks (assuming 15s blocks)
  + function votingPeriod() public pure returns (uint) { return 5760; } // ~3 days in blocks (assuming 5s blocks)
  /// @notice The address of the timelock
  TimelockInterface public timelock;
  