Github user egorklimov commented on the issue:
https://github.com/apache/zeppelin/pull/3107
@felixcheung On other hand, risk of showing all notes may be greater,
therefore I think that we should add this workaround, because everyone who is
upgrading from any version less than 0.8.x will be faced with this problem,
maybe instead of adding this note we could just add python script to project,
but IMHO note is better.---
