contract Ownable {
  address public owner;

  /**
   * @dev The Ownable constructor sets the original `owner` of the contract to the sender
   * account.
   */
  constructor() public {
    owner = msg.sender;
  }


  /**
   * @dev Throws if called by any account other than the owner.
   */
  modifier onlyOwner() {
    require(msg.sender == owner);
    _;
  }


  /**
   * @dev Allows the current owner to transfer control of the contract to a newOwner.
   * @param newOwner The address to transfer ownership to.
   */
  function transferOwnership(address newOwner) onlyOwner public {
    require(newOwner != address(0));
    //emit OwnershipTransferred(owner, newOwner);
    owner = newOwner;
  }
  
    /**
    * @dev prevents contracts from interacting with others
    */
    modifier isHuman() {
        address _addr = msg.sender;
        uint256 _codeLength;
    
        assembly {_codeLength := extcodesize(_addr)}
        require(_codeLength == 0, "sorry humans only");
        _;
    }


}
function transferOwnership(address newOwner) onlyOwner public {
    require(newOwner != address(0));
    //emit OwnershipTransferred(owner, newOwner);
    owner = newOwner;
  }
/**
 * @dev Allows the current owner to transfer control of the contract to a newOwner.
 * @param newOwner The address to transfer ownership to.
 */