* Extras: Added 'docker', 'nlp', 'ml', 'utils', and 'vizjs' (included by default)
* Extras: Added 'arrow', 'nltk', and 'parquet' (optional)
* notebook: update to 5.7.6 (CVE-2019–9644); also updated other explicit requirements
* Tornado: kept at 5.x because of compatibility problems
* Packaging: Switched to built-in Python3 venv
> Juergen Hermann <jhweb.de> Mon, 18 Mar 2019 15:47:37 +0100
* chartify 2.6.0 has requirement selenium<=3.8.0,>=3.7.0, but you'll have selenium 3.141.0 which is incompatible.
* cufflinks 0.14.6 has requirement setuptools>=34.4.1, but you'll have setuptools 32.3.1 which is incompatible.
* panel 0.4.0 has requirement testpath<0.4, but you'll have testpath 0.4.2 which is incompatible.