Static-frame

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``.

Updated all delimited text output formats to include a final line termination.

``Frame.from_overlay`` now takes optional ``index`` and ``columns`` arguments; ``Series.from_overlay`` now takes an optional ``index`` argument.

Improvements to union/intersection index formation in ``Frame.from_overlay`` and ``Series.from_overlay``.

Performance improvements to ``Frame.pivot``.

``Frame.from_xlsx`` now exposes ``skip_header`` and ``skip_footer`` parameters.