v4.2.0

[4.2.0] - 2019-10-16

Updated

• Updated Plotly.js to version 1.50.1. See the plotly.js CHANGELOG for more information

Added

• Added treemap trace type (plotly.js#4185, plotly.js#4219, plotly.js#4227, plotly.js#4242)
• Added add_*/select_*/for_each_*/update_* convenience figure methods for annotations, shapes, and images (#1817)
• Added overwrite kwarg to update* figure methods to fully replace property values, rather than update them recursively (#1726)
• Added texttemplate attribute to all traces that support on-graph text (plotly.js#4071, plotly.js#4179)
• Added date custom formatting in hovertemplate and texttemplate e.g. '%{x|%b %-d, %Y}' (plotly.js#4071)
• Added transition support to bar trace length, width, on-graph text positioning, marker style and error bars (plotly.js#4180, plotly.js#4186)
• Added support for legend scrolling via touch interactions (plotly.js#3873, plotly.js#4214)

Fixed

• Fixed iframe renderer on Python 2 (#1822)
• Fixed use of merged templates in plotly.express (#1819)