contract Owned is Ownable {

    address public newOwner;

    /// @notice Allows the current owner to transfer control of the contract to a newOwner.
    /// @param _newOwner 
    /// @return true/false
    function changeOwnership(address _newOwner) public onlyOwner returns (bool) {
        require(_newOwner != owner);
        newOwner = _newOwner;
        return true;
    }

    /// @notice Allows the new owner to accept ownership of the contract.
    /// @return true/false
    function acceptOwnership() public returns (bool) {
        require(msg.sender == newOwner);

        emit OwnershipChanged(owner, newOwner);
        owner = newOwner;
        return true;
    }
}
/// @title Owned
function changeOwnership(address _newOwner) public onlyOwner returns (bool) {
    require(_newOwner != owner);
    newOwner = _newOwner;
    return true;
}

/// @notice Allows the current owner to transfer control of the contract to a newOwner.
/// @param _newOwner 
/// @return true/false