Static-frame

Implemented ``equals()`` methods on all containers.

Added defensive check against assigning a Pandas Series to a FrameGO as an unlabeled iterator.

Added proper handling of types multiple-inherited from ``str`` (or any other type) and ``Enum``.

Implemented support for operator overloading of addition and multiplication on string dtypes.

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.