Release v0.18.4
Merge pull request #628 from plotly/update-databases Add external database fallback Former-commit-id: 21fea3e0dfc30708562581def0a3a6c340e96402
Merge pull request #628 from plotly/update-databases Add external database fallback Former-commit-id: 21fea3e0dfc30708562581def0a3a6c340e96402