v3.8.0

[3.8.0] - 2019-04-15

Updated

• Updated Plotly.js to version 1.47.1. See the
  plotly.js CHANGELOG
  for more information.

Added

• Three new trace types: sunburst (plotly/plotly.js#3594), waterfall (plotly/plotly.js#3531), and volume (plotly/plotly.js#3488).
• New plotly.io.to_html and plotly.io.write_html functions to export figures as html (#1474).
• Added animation_opts argument to plotly.offline.plot and plotly.offline.iplot to control the auto-play animation settings (#1503). Special thanks to @TakodaS for this contribution!

Fixed

• Fix race condition when checking the permissions of the .plotly settings directory (#1498). Special thanks to @pb-cdunn for this contribution!
• Fix OSError when processing time series data using Python 3.7+ (#1402, #1501)

Updated

• Align hoverlabels left and set legend items to constant-size in builtin themes (#1520)