Version 0.5.0

• Fix bug when running as root user on linux (#59)
• node-based saver hides window warnings that were displayed when saving interactive charts
  (#53, #57)
• node-based saver now accepts vega_cli_options that will be passed to command line (#52)

Version 0.4.0

• altair_saver.types is now a public module. (#47)
• altair_saver.JavascriptError now importable at top-level. (#46)
• Added top-level available_formats() function, which returns the set of
  available formats. (#43)

Version 0.3.1

Fix bug in detecting npm binary path (#42)

Version 0.3.0

Behavior changes

• save() now returns the serialized chart if fp is not specified (#41).
• fmt="json" now saves the input spec directly for both vega and vega-lite input.
  Additionally, the json format in render() outputs a JSON mimetype rather than
  a vega-lite mimetype (#34).
• render() and save() with HTML format now have a standalone argument
  that defaults to True for save() and False for render(), so that HTML
  output will work better in a variety of notebook frontends (#33).
• HTML and Selenium output now respects embedding options set via
  alt.renderers.set_embed_options (#30, #31).

Maintenance

• much improved documentation & test coverage.

Version 0.2.0

Behavior changes

• selenium: prefer chromedriver over geckodriver when both are available (#27)

Bug Fixes

• selenium: altair_saver respects altair themes (#22)
• selenium: improve javascript-side error handling (#19)