Build System
- Add pandas ([9](https://github.com/estripling/onekit/pull/9),
[`a5185ba`](https://github.com/estripling/onekit/commit/a5185baf15be09815fed92c34a70191ebdc86a91))
Documentation
- Add example ([10](https://github.com/estripling/onekit/pull/10),
[`9af41f3`](https://github.com/estripling/onekit/commit/9af41f347198d43d42def455cf6e2076992fe603))
* docs(example.ipynb): add pytlz.flatten and sparktlz.union
* style(sparktlz.union): rearrange docsting imports
* docs(README.md): add example
- Import pytlz directly ([6](https://github.com/estripling/onekit/pull/6),
[`e777ec4`](https://github.com/estripling/onekit/commit/e777ec440be757da0cd7a896563580f8d343667a))
* refactor: import pytlz directly
* docs: no import onekit as ok
* docs(README.md): rename example usage to examples
* docs: add module description
Features
- Add sparktlz ([5](https://github.com/estripling/onekit/pull/5),
[`443dc33`](https://github.com/estripling/onekit/commit/443dc338543f301da19d4a656e65bb7632949363))
* build: add pyspark
* tests: set up Spark session
- **pytlz**: Add flatten ([7](https://github.com/estripling/onekit/pull/7),
[`7629260`](https://github.com/estripling/onekit/commit/7629260f14a0ce7af3afa78e624753f03efd55e1))
* tests(date_to_str): correct test name
* feat(pytlz): add flatten
- **sparktlz**: Add union ([8](https://github.com/estripling/onekit/pull/8),
[`7680762`](https://github.com/estripling/onekit/commit/76807626f3c64755171654d43749eb9c875c9d8c))