Provide a US-spelling version of the 'centre' option, either 'center' or 'centre' will work.
Prevent multiple Matplotlib arguments of the same name being passed to `plt.Rectangle`, as happens from `plot_labelbox`.
Improve function docstring.
Minor fix in docstring for `plot_arrow`, tex string should be raw. This upsets Sphinx when any other package imports spatialmath.
Improve handling of the "format string" arg.
Provide a US-spelling version of the 'centre' option, either 'center' or 'centre' will work.
Prevent multiple Matplotlib arguments of the same name being passed to plt.Rectangle, as happens from plot_labelbox. Improve the docstring.
Minor fix in docstring for plot_arrow, tex string should be raw. This upsets Sphinx when any other package imports spatialmath.