Removed long and short channel inputs from output dictionary in goes_lx().
Added capability to goes_lx() to also output cumulative radiated energy in
the GOES wavelength ranges as a function of time via the cumulative kwarg.
Added check in goes_lx() to ensure flux and time inputs are of same length.
Added check in calc_rad_loss() to ensure flux and time inputs are of
same length.
Added capability to calc_rad_loss() to also output cumulative radiated losses
in as a function of time via the cumulative kwarg.
Removed temperature, emission measure, and time inputs from output dictionary
in calc_rad_loss()