Method pause

src/apputils/measure.h:52–69

    }

    void pause()
    {
        std::chrono::high_resolution_clock::time_point end
           = std::chrono::high_resolution_clock::now();

        if(m_started)
        {
            const std::chrono::duration<float, std::milli> duration = end - m_start;

            m_duration += duration;
        }
        else
        {
            throw std::runtime_error("Measure already stopped.");
        }

        m_started = false;
    }
    
    void print() const noexcept
    {