I'm looking for support of doing PRs of .ipynb files.  For example, integration with ReviewNB.  https://towardsdatascience.com/introducing-reviewnb-visual-diff-for-jupyter-notebooks-6797e6dfa20c

However, they need support to complete the integration.  Absent this support, I'm considering moving to GitHub, which not only has that, but direct integration with Google Colab.  With Bitbucket, I'm finding using Google Colab very painful!

https://github.com/ReviewNB/support/issues/7
https://community.atlassian.com/t5/Bitbucket-questions/Can-we-specify-webhook-endpoint-for-OAuth-apps/qaq-p/1590078#M60932

Note this historic change got partway there but didn't solve the problem.  https://jira.atlassian.com/browse/BSERV-11451