--histogram: Add power histogram for running average

    if "histogram" in opt:

        bin_count = int(opt["histogram"])

        plt.title("EnergyTrace Data Analysis")

        plt.xlabel("Reported Energy per Measurement Interval [J]")

        plt.ylabel("Count")

        plt.hist((data[1:, 3] - data[:-1, 3]) * 1e-9, bins=bin_count)

        plt.show()

        plt.title("EnergyTrace Data Analysis")

        plt.xlabel("Measurement Interval Duration [s]")

        plt.ylabel("Count")

        plt.hist((data[1:, 0] - data[:-1, 0]) * 1e-6, bins=bin_count)

        plt.show()

        plt.title("EnergyTrace Data Analysis")

        plt.xlabel("Mean Power per Measurement Interval [W]")

        plt.ylabel("Count")

        plt.hist(power_from_energy, bins=bin_count)

        plt.show()

        plt.title("Postprocessing via Running average (window size=10)")

        plt.xlabel("Mean Power per Measurement Interval [W]")

        plt.ylabel("Count")

        plt.hist(mean_power, bins=bin_count)

        plt.show()