[skip ci] Update documentation

Update version.py

Update requirements.txt

Fix dependency issue

Details at dylan-profiler/visions#15

Commit for pandas-profiling v2.5.0 (ydataai#380)

- Progress bar added (ydataai#224)
- Character analysis for Text/NLP (ydataai#278)
- Themes: configuration and demo's (Orange, Dark)
- Tutorial on modifying the report's structure (ydataai#362; ydataai#281, ydataai#259, ydataai#253, ydataai#234). This jupyter notebook also demonstrates how to use the Kaggle api together with pandas-profiling.
- Toggle descriptions at correlations.

Deprecation:

- This is the last version to support Python 3.5.

Stability:

- The order of columns changed when sort="None" (ydataai#377, fixed).
- Pandas v1.0.X is not yet supported (ydataai#367, ydataai#366, ydataai#363, ydataai#353, pinned pandas to < 1)
- Improved mixed type detection (ydataai#351)
- Refactor of report structures.
- Correlations are more stable (e.g. Phi_k color scale now from 0-1, rows and columns with NaN values are dropped, ydataai#329).
- Distinct counts exclude NaNs.
- Fixed alerts in notebooks.

Other improvements:

- Warnings are now sorted.
- Links to Binder and Google Colab are added for notebooks (ydataai#349)
- The overview section is tabbed.

* Commit for pandas-profiling v2.5.0

- Progress bar added (ydataai#224)
- Character analysis for Text/NLP (ydataai#278)
- Themes: configuration and demo's (Orange, Dark)
- Tutorial on modifying the report's structure (ydataai#362; ydataai#281, ydataai#259, ydataai#253, ydataai#234). This jupyter notebook also demonstrates how to use the Kaggle api together with pandas-profiling.
- Toggle descriptions at correlations.

Deprecation:

- This is the last version to support Python 3.5.

Stability:

- The order of columns changed when sort="None" (ydataai#377, fixed).
- Pandas v1.0.X is not yet supported (ydataai#367, ydataai#366, ydataai#363, ydataai#353, pinned pandas to < 1)
- Improved mixed type detection (ydataai#351)
- Refactor of report structures.
- Correlations are more stable (e.g. Phi_k color scale now from 0-1, rows and columns with NaN values are dropped, ydataai#329).
- Distinct counts exclude NaNs.
- Fixed alerts in notebooks.

Other improvements:

- Warnings are now sorted.
- Links to Binder and Google Colab are added for notebooks (ydataai#349)
- The overview section is tabbed.

Update README.md

Fix broken configuration links (ydataai#312 )

Notebook Tests

Codecov and Census dataset

Update README.md

Merge pull request ydataai#212 from pandas-profiling/v2.1.1

Commit for release 2.1.2.