Static-frame

Frame.to_pandas()`` now creates ``pd.RangeIndex`` for ``IndexAutoFactory``-created indices.

Performance enhancements to ``Frame.from_concat()``.

Corrected issue extracting containers stored in ``Series``.

Improved dtype resolution on ``Frame`` methods that reduce dimensionality.

Corrected issue where summing a ``Frame`` of Booleans along axis 0 resulted in Booleans instead of integers.

Performance enhancements to ``Frame.iter_group()`` and ``Frame.iter_group_items()``.

Added ``Frame.to_npz()``, ``Frame.from_npz()``

Performance enhancements to ``Frame.iter_group()`` and ``Frame.iter_group_items()``.

Performance enhancements to ``Frame.pivot()``.

Added ``drop`` parameter to ``Frame.iter_group()`` and ``Frame.iter_group_items()``.

Introduction of ``TypeBlocks._block_slices`` as lazily derived and persistently stored.

Fixed issue with ``Frame.from_overlay`` when called with ``FrameGO``.

Added ``index_constructor`` argument to ``apply``, ``apply_pool``, ``map_any``, ``map_fill``, ``map_all``.