Dtale

* Added missingno chart display
* added new side panel for viewing describe data
* updated how requirements files are loaded in setup.py
* added cleanup function to instance object
* added animation for display of hidden/filter/sort info row
* [306](https://github.com/man-group/dtale/issues/306): ribbon menu

* [458](https://github.com/man-group/dtale/issues/458): fix for killing D-Tale sessions in jupyter_server_proxy
* [378](https://github.com/man-group/dtale/issues/378): add cleaning functions to chart inputs

* [390](https://github.com/man-group/dtale/issues/390): funnel charts
* [255](https://github.com/man-group/dtale/issues/255): extended chart aggregations

* [454](https://github.com/man-group/dtale/issues/454): fixed issue with parenthesis & percent symbols in column names

* hotfix for chart code exports of category column analysis

* moved "Open In New Tab" button
* [135](https://github.com/man-group/dtale/issues/135): refactored column analysis code and updated code exports to include plotly charts