Static-frame

Refined application of binary equality operators to permit comparison with strings or elements that are not sequences.

API change: ``__bool__`` of all containers now raises a ValueError.

API change: ``IndexHierarchy.iter_label`` now iterates over realized labels.

API change: ``IndexBase.union``, ``IndexBase.intersection`` no longer automatically unpack ``values`` from ``ContainerOperand`` subclasses.

API change: Container operands used with binary equality operators will raise if sizes are not equivalent

API change: ``Frame.from_xlsx``, as well as ``StoreConfig`` now set ``trim_nadir`` to False by default.

API change: ``Series.relabel_add_level`` to ``Series.relabel_level_add``, ``Series.relabel_drop_level`` to ``Series.relabel_level_drop``, ``Frame.relabel_add_level`` to ``Frame.relabel_level_add``, ``Frame.relabel_drop_level`` to ``Frame.relabel_level_drop``, ``Index.add_level`` to ``Index.level_add``, ``IndexHierarchy.add_level`` to ``IndexHierarcchy.level_add``, ``IndexHierarchy.drop_level`` to ``IndexHierarchy.level_drop``.

Frame.dtype`` interface now takes ``DtypesSpecifier``, permitting setting ``dtype`` by mapping, iterable, or single value.

``dtypes`` can be given as a single ``DtypeSpecifier`` for specifying ``dtype`` of all columns.

``Series`` of ``Frame`` can now be created without specifying ``dtype`` arguments.

``Frame`` now supports usage as a ``weakref``.

``Frame.from_parquet`` now raises when ``columns_select`` names columns not found in the file.

Fixed issue in implementation of ``trim_nadir`` when reading XLSX files.

Fixed issue in ``Frame.from_pandas`` when the columns have mixed types including integers.

Improved ``dtype`` preservation in zero-sized ``Series`` extraction from ``Frame``.

Added ``trim_nadir`` parameter to ``StoreConfig`` and ``Frame.from_xlsx``: permits removing all-None trailing rows and columns resulting from XLSX styles being applied to empty cells.

Added a ``name`` parameter to ``Series.from_pandas`` and ``Frame.from_pandas``.

Added ``Frame.from_msgpack`` and ``Frame.to_msgpack``.

Refactored ``Bus`` and ``Batch`` to use the mixin class ``StoreClientMixin`` to share exporters and constructors.

Added ``StoreClientMixin.to_zip_parquet`` and ``StoreClientMixin.from_zip_parquet``.

Performance improvements to ``Frame.to_pandas`` when a ``Frame`` has unified ``TypeBlocks``.