Static-frame

Added ``key`` argument for sort pre-processing to ``Index.sort()``, ``IndexHierarchy.sort()``, ``Series.sort_index()``, ``Series.sort_values()``, ``Frame.sort_index()``, ``Frame.sort_columns``

Implemented support for multiprocessing Frame loading from ``StoreZip`` subclasses used by ``Bus``, ``Batch``, and ``Quilt``.

Added ``read_max_workers``, ``read_chunksize``, ``write_max_workers``, ``write_chunksize`` to ``StoreConfig``.

Added ``include_index_name``, ``include_columns_name`` parameters to ``Frame.to_arrow``

Added ``include_index_name``, ``include_columns_name`` parameters to ``Frame.to_parquet``

Added ``index_name_depth_level``, ``columns_name_depth_level`` parameters to ``Frame.from_arrow``

Added ``index_name_depth_level``, ``columns_name_depth_level`` parameters to ``Frame.from_parquet``

Fixed issue where non-optimal dtype would be used for new columns added in reindexing.

Added immutable, hashable containers ``SeriesHE`` and ``FrameHE``.

Implemented ``read_many`` for all ``Store`` subclasses; ``Bus`` now uses these interfaces for significantly faster reads of multi-``Frame`` selections.

Improved handling of connection object given to ``Frame.from_sql``.

Improved type-preservation and performance when assigning ``Frame`` into ``Frame``.

Improved handling for using ``Frame.iter_group`` on zero-sized ``Frame``.

``Series`` can now be used as arguments to ``dtypes`` in ``Frame`` constructors.

Added ``via_dt.strptime`` and ``via_dt.strpdate`` for parsing strings to Python ``date``, ``datetime`` objects, respectively.

Bus`` indices are no longer required to be string typed.

``StoreConfig`` adds ``label_encoder``, ``label_decoder`` parameters for translating hashables to strings and strings to hashables when writing to / from ``Store`` formats.

``Frame.from_sql`` now supports a ``columns_select`` parameter.

``StoreConfig`` now supports a ``columns_select`` parameter; ``columns_select`` parameters from ``StoreConfig`` are now used in ``StoreZipParquet``, ``StoreSQLite``.

Extended ``via_str.startswith()`` and ``via_str.endswith()`` functions to support passing an iterable of strings to match.

Improved ``IndexHierarchy.loc_to_iloc`` to support Boolean array selections.

Improvements to ``Quilt`` extraction routines.

Improved handling of invalid file paths given to constructors.

Improved implementations of ``Bus.items()``, ``Bus.values``, and ``Bus.equals()`` that deliver proper results when `max_persist` is active.

Implementation of ``Quilt``, a container that presents the contents of a ``Bus`` as either vertically or horizontally stacked ``Frame``.

Implemented ``__deepcopy__()`` on all containers.