function startNewRound(address _wallet, ERC20 _token, uint256 _cap, uint256 _bonusCap, uint256 _openingTime, uint256 _closingTime) payable public onlyOwner {
    require(!hasOpened());
    wallet = _wallet;
    token = _token;
    cap = _cap;
    bonusCap = _bonusCap;
    openingTime = _openingTime;
    closingTime = _closingTime;
    ethRaised = 0;
  }