PRS
- [9](https://github.com/drageelr/manim-data-structures/pull/9)
- `MArraySlidingWindow` added.
- [8](https://github.com/drageelr/manim-data-structures/pull/8)
- Sphinx extensions added (intersphinx, napolean, viewcode, autodoc_typehints).
- Substitution reference file added `refsub.rst` and utilized in Animating Arrays guide.
- Docstrings of all classes updated.