Contents:
plot_orbital_property()
plot_wave_energy_frequency()
add_colorbar_map()
broadening()
brokenaxes()
fit_val()
get_kwargs()
gradient_color_line()
make_line_segments()
autocorrelation()
cal_spectra()
fft_acf()
get_dipole_dev()
infrared()
plot_spectra()
smooth()
window: flat, hanning, hamming, bartlett, blackman