Add jupyterlab and dependencies

pip install jupyterlab

requirements.txt

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+attrs==19.3.0
+backcall==0.1.0
+bleach==3.1.0
+decorator==4.4.1
+defusedxml==0.6.0
+entrypoints==0.3
+importlib-metadata==1.0.0
+ipykernel==5.1.3
+ipython==7.10.0
+ipython-genutils==0.2.0
+jedi==0.15.1
+Jinja2==2.10.3
+json5==0.8.5
+jsonschema==3.2.0
+jupyter-client==5.3.4
+jupyter-core==4.6.1
+jupyterlab==1.2.3
+jupyterlab-server==1.0.6
+MarkupSafe==1.1.1
+mistune==0.8.4
+more-itertools==8.0.0
+nbconvert==5.6.1
+nbformat==4.4.0
+notebook==6.0.2
+pandocfilters==1.4.2
+parso==0.5.1
+pexpect==4.7.0
+pickleshare==0.7.5
+prometheus-client==0.7.1
+prompt-toolkit==3.0.2
+ptyprocess==0.6.0
+Pygments==2.5.2
+pyrsistent==0.15.6
+python-dateutil==2.8.1
+pyzmq==18.1.1
+Send2Trash==1.5.0
+six==1.13.0
+terminado==0.8.3
+testpath==0.4.4
+tornado==6.0.3
+traitlets==4.3.3
+wcwidth==0.1.7
+webencodings==0.5.1
+zipp==0.6.0