- update to 0.10.0:
* :class:`~mizani.formatters.mpl_format` has been removed,
:class:`~mizani.formatters.number_format` takes its place.
* :class:`~mizani.breaks.mpl_breaks` has been removed,
:class:`~mizani.breaks.extended_breaks` has always been
the default and it is sufficient.
* matplotlib has been removed as a dependency of mizani.
* mizani now requires python 3.9 and above.
* The units parameter for of :class:`~mizani.formatters.timedelta_format`
now accepts the values `"min", "day", "week", "month"`,
instead of `"m", "d", "w", "M"`.
* The naming convention for break formatting methods has changed
from `*_format` to `label_*`.
* The naming convention for break calculating methods has changed
from `*_breaks` to `breaks_*`. Specifically these methods have
been renamed.
* `log_breaks` is now :class:`~mizani.breaks.breaks_log`
* `trans_minor_breaks` is now :class:`~mizani.breaks.minor_breaks_trans`
* `date_breaks` is now :class:`~mizani.breaks. breaks_date`

values would cause a RuntimeError.
* Fixed issue with :class:`mizani.formatters.log_breaks` where non-linear
breaks could not be generated if the limits where greater than the largest
* Fixed :func:`mizani.scales.scale_discrete.train` when training categoricals