[BUG] lack of pure virtual method overload in DQ_SerialManipulatorDense

[chewheel]

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Bug description

• lack of overload of virtual Eigen::MatrixXd DQ_robotics::DQ_SerialManipulator::raw_pose_jacobian_derivative(const VectorXd&, const VectorXd&, const int&) const in DQ_SerialManipulatorDenso

To Reproduce

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Code

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Output

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Expected behavior

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Expected output

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Environment:

• OS: [e.g. Ubuntu 16.04, Ubuntu 18.04]
• dqrobotics version
• Python version [e.g. 3.6, 3.7 (If applicable)]
• MATLAB version [e.g., 2018b, 2019a, (if applicable)]

Additional context

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[mmmarinho]

Should be fixed by #51.