Features
- Add numpykit ([47](https://github.com/estripling/onekit/pull/47),
[`d580b8f`](https://github.com/estripling/onekit/commit/d580b8f3167731c028dc65c62b7b76f46e7d259e))
* refactor(check_vector): move optfunckit -> numpykit
* feat(numpykit): add stderr
Refactoring
- Move math functions to mathkit ([46](https://github.com/estripling/onekit/pull/46),
[`c4a5bd8`](https://github.com/estripling/onekit/commit/c4a5bd8c83986b626d6c7d2b01d6ee920b746263))
* refactor(collatz): move pythonkit -> mathkit
* refactor(fibonacci): move pythonkit -> mathkit
* refactor: move isdivisible iseven isodd to mathkit
- Small updates ([45](https://github.com/estripling/onekit/pull/45),
[`c6f02d7`](https://github.com/estripling/onekit/commit/c6f02d701965b6c34ae50392f5b2fdd5a573d654))
* refactor(XyzPoints): adjust type hints
* docs(peaks): add reference
* docs(optfunckit): add ai-roomi reference
* docs(concat_strings): add docstring example