Fix
* DataFrameAnalyzer run flow ([`78cd900`](https://github.com/la0bing/melpoi/commit/78cd900756ded5ed3607a111678d51edbf5fb8b5))
* Incorrect checking type after new fix ([`e21bc3a`](https://github.com/la0bing/melpoi/commit/e21bc3aed8bd2f74d076b53cd657dc73bd08c044))
* Added new class for dtypes ([`87d6a73`](https://github.com/la0bing/melpoi/commit/87d6a73c7db943dc906e3b24ea59a179d60b1a64))
Documentation
* Samples cleanup ([`487fdfd`](https://github.com/la0bing/melpoi/commit/487fdfd86cea6bb770f307c2e591efdfe3d9718e))
* Cleanup for sql and added for dataframe ([`e470624`](https://github.com/la0bing/melpoi/commit/e470624179431b8b921fb34f5e1bf11248af1e89))