Release v0.16.0
Merge pull request #601 from plotly/add-pileup-demo Add pileup demo (#minor) Former-commit-id: 555e87d87846dc142681ee7c444c412388d7292d
Merge pull request #601 from plotly/add-pileup-demo Add pileup demo (#minor) Former-commit-id: 555e87d87846dc142681ee7c444c412388d7292d