v0.7.0

What's Changed

• Update-TitleDescription by @jgunstone in #246
• Refactor-autoui by @jgunstone in #247
  • AutoUi is now a builder function, not a class
    it selects what widget (typically a container widget) to use and returns that widget.
• fix buttonbar messages (pass raw html not markdown) by @jgunstone in #248
• Update-error-handling-to-FilesUploadToDir by @jgunstone in #249
• 💥 remove workingdir.py. copied it out to wufitoolbox. by @jgunstone in #250
• fix deprecation warnings in traitlets and pydantic by @jgunstone in #251

Full Changelog: 0.6.0...0.7.0