Install JupyterLab Renderers with conda

[jtpio]

Fixes #103

As a side-effect, this also removes the build step and should make the Binder build faster.

Testing on:

https://mybinder.org/v2/gh/jtpio/jupyterlab-demo/renderers?urlpath=lab

TODO

• [x] Install from PyPI
• [x] Install from conda-forge when the packages are available

[jasongrout]

+3 −20

Nice!

[jtpio]

Opened https://github.com/jupyterlab/jupyterlab-demo/pull/106 to switch to GitHub Actions.

The CI failure on Travis seems to be related to timing out when solving the environment: