Draft: Fix astroid version pinning
Add astroid version pinning to setup.cfg and update to latest
known working version.
This MR includes
- the reversion of the latest fix that disables pylint warnings in
polaris/learn/feature/extraction.py. - a fix for
to_jsonfunctions
Fixes #184 (closed)
Signed-off-by: Patrick Dohmen dl4pd@darc.de
Edited by Patrick Dohmen