Static-frame

Extended ``Series.count()`` and ``Frame.count()`` with ``skipfalsy`` and ``unique`` parameters.

Added ``Series.isfalsy()``, ``Series.notfalsy()``, ``Series.dropfalsy()``, ``Series.fillfalsy()``.

Added ``Frame.isfalsy()``, ``Frame.notfalsy()``, ``Frame.dropfalsy()``, ``Frame.fillfalsy()``.

Exposed ``isna_element()`` via ``arraykit`` on root namespace.

Added ``Bus.from_concat()``.

Added ``Bus.to_series()``.

``Bus.reindex()``, ``Bus.relabel()``, ``Bus.relabel_flat()``, ``Bus.relabel_level_add()``, ``Bus.relabel_level_drop()``, ``Bus.rehierarch()`` now, if necessary, load all contents from the associated ``Store`` and return a ``Bus`` without a ``Store`` association.

Added ``index_constructor`` argument to ``Series.from_concat_items()``.

Added ``index_constructor``, ``columns_constructor`` arguments to ``Frame.from_concat_items()``.

Introduced ``IndexDefaultFactory`` to permit specifying index ``name`` attributes with default index constructors.

Added ``Frame.to_series()``.

``Frame.sort_values()``, ``Frame.sort_index()``, ``Frame.sort_columns``, ``Series.sort_index()``, and ``IndexHierarchy.sort()`` now accept ``ascending`` as an iterable of Booleans to specify value per vector.

``FrameGO.via_fill_value()`` now supports providng a fill value in ``__setitem__()`` assignment.

``IndexAutoFactory`` can now be instantiated with a ``size`` parameter to pre-set the size of an auto-index, such as when used to initialize a ``FrameGO``.

Added support for loading containers into specialized VisiData ``Sheet`` and ``IndexSheet`` subclasses; added ``to_visidata()`` exporter to all containers.

Added ``StyleConfig`` class for configuring display characteristics. Added default ``StyleConfigCSS`` for improved default HTML presentation.

Added ``Series.rank_ordinal``, ``Series.rank_dense``, ``Series.rank_mean``, ``Series.rank_min``, ``Series.rank_max``.

Added ``Frame.rank_ordinal``, ``Frame.rank_dense``, ``Frame.rank_mean``, ``Frame.rank_min``, ``Frame.rank_max``.

Fixed issue in ``Series.from_element()`` and ``Frame.from_element()`` that would broadcast some iterables instead of treat them as an element.

Extended ``Frame.unset_index()`` to support unsetting ``IndexHierarchy``.

Added ``index_continuation_token`` and ``columns_continuation_token`` to ``Frame.from_delimited()`` and related methods.

Added ``via_re()`` interfaces to ``Index``, ``IndexHierarchy``, ``Series``, ``Frame``.

Integration with ``arraykit``; replacement of numerous utility methods with ``arraykit`` implementations.

Added ``via_fill_value()`` interface to ``Series`` and ``Frame``.

Performance enhancements to ``Quilt.iter_series().apply()``, ``Quilt.iter_tuple().apply()``, ``Quilt.iter_array().apply()``.