Static-frame

Implemented ``via_str`` and ``via_dt`` accesors on all ``ContainerOperand``.

When writing to XLSX, the shape of the ``Frame`` is validated to fit within the limits of XLSX sheets.

Added support for ``round()`` on ``Frame``.

Added ``name`` parameter to all methods of ``IterNodeDelegate`` that produce a new container, including ``map_any()``, ``map_fill()``, ``map_all()``, ``apply()``, and ``apply_pool()``.

Support for ``include_index`` and ``include_columns`` in ``DisplayConfig`` instances and ``Display`` output.

Performance improvements to iterating tuples from ``IndexHierarchy``.

Performance improvements for ``IndexHierarchy`` transformations, including adding or dropping levels and rehierarch.

Added explicit handling for binary operators applied to differently-sized ``IndexHierarchy``.

Refined behavior of ``Frame.from_concat_items`` when given tuples as labels; implemented support for tuples as labels in ``IndexLevels.values_at_depth``.

Refined behavior of ``names`` attribute on ``IndexBase`` to ensure that an appropriately sized iterable of labels is always returned.

Added ``IndexHour`` and ``IndexHourGO`` indices.

Added ``IndexMicrosecond`` and ``IndexMicrosecondGO`` indices.

Added support for ``round()`` on ``Series``.

``Index.astype`` now returns specialized ``datetime64`` ``Index`` objects when given an appropriate dtype.

``IndexHierarchy.astype`` now produces an ``IndexHierarchy`` with specialized ``datetime64`` ``Index`` objects when given an appropriate dtype.

Added ``IndexLevels.dtypes_at_depth()`` and ``IndexLevels.dtype_per_depth()`` to capture resolved dtypes per depth.

Added ``IndexLevels.values_at_depth()`` to capture resolved typed arrays per depth.

Updated ``IndexHierarchy.display()`` to display proper types per depth.

Refactored ``IndexLevel`` to lazily cache depth and length attributes.

Refactored ``IndexHierarchy`` to store a ``TypeBlocks`` instance instead of 2D array, permitting reuse of ``TypeBlocks`` functionality, columnar type preservation, and immutable array reuse.

Fixed flaw in ``IndexHierarchy.label_widths_at_depth``.

Fixed flaw in ``Frame.from_records`` and related routines whereby a ``NamedTuple`` in an iterable of length 1 was converted to a single-row, two-dimensional array.

Fixed flaw in ``Frame`` function application on iterators for some ``Index`` type configurations.

API documentation now shows full signatures for all functions.