v2.15.0

Added

• Add angle, angleref and standoff to marker and add backoff to line; also introduce new arrow symbols to facilitate drawing networks [#6297]
• Add minreducedwidth and minreducedheight to layout for increasing control over automargin [#6307]
• Add entrywidth and entrywidthmode to legend [#6202, #6324]

Changed

• Use valType of angle for rotation in pie [#6304]

Fixed

• Fix mapbox touch event after switching back from select mode [#6281],
  with thanks to @mmtmr for the contribution!
• Fix automargin to update axis titles in redraws [#6312]
• Fix exporting patterns with transparent color [#6318]
• Fix exporting text on empty slices [#6335]
• Disable interactions for treemap, icicle, sunburst, pie, funnelarea,
  parcats, parcoords and sankey traces when staticPlot is set to true [#6296]