Some gentle style munging.
More signature/style munging.
Wrote phase_axes and basic_phase, with some more modifications upcoming.
Removed a superfluous indent level from lightcurve_axes.
Caught issue with non-float periods.
Fixed where an error gets thrown if there's not enough data.
Added a `colorbar` kwarg to plot_trajectory_core().

As far as I know this shouldn't break anything and is only used in plot4.
Added `colorbar` kwarg to colormag_axes and colorcolor_axes.

It is simply passed along to plot_trajectory_core().
Wrote a multi_lc_phase function that is working well.

Not quite finished though. I gotta reduce some of the text clutter in the labels everywhere.