Put curly brace + text outside the plot

[kir0ul]

Hi,

Thanks for this project, it's super useful!
One thing I was wondering is if it would be possible to add the possibility to put curly braces outside the plot, for example to point at a specific range of interest on the x or y ticks labels.

I believe it is just missing a few clip_on=False on the plot() and ax.axes.text() methods used in the code, for example:

ax.plot(arc1x, arc1y, clip_on=False, **kwargs)
ax.axes.text(...clip_on=False,...)

Happy to make a PR in case! 🙂