v31.0.0b4

This is a beta release for the upcoming 31 release.

v31 is a major release with many new features, and several bug fixes and
improvements including major updates to the package and dependency collection and to the license detection.

Several bugs have been fixed when compared by b3.

See https://github.com/nexB/scancode-toolkit/blob/v31.0.0b4/CHANGELOG.rst for an overview of the changes.
Please try this release and report any installation issues so we can work towards a stable 31.
Thank you!

What's Changed

• Populate for packages field correctly #2929 by @JonoYang in #2939
• Prepare Release 31b4 by @pombredanne in #2941
• Duplicated dependencies package results by @JonoYang in #2944
• Prepare Release 31b4 by @pombredanne in #2947

Full Changelog: v31.0.0b3...v31.0.0b4