v21.3.31 - major version with no breaking API changes

This is a major version with no breaking API changes.
Attention: the next version will bring up some significant API changes summarized in the CHANGELOG.

Security:

• Update dependency versions for security.

License scanning:

• Add 22 new and update 71 existing reference licenses
• Update licenses to include the SPDX license list 3.12
• Improve license detection accuracy with over 2300 new and improved license
  detection rules
• Undeprecate the regexp license and deprecate the hs-regexp-orig license
• Improve license db initial load time with caching for faster scancode
  start time
• Ensure that license short names are no more than 50 characters long
• Thank you to:
  • Dennis Clark @DennisClark
  • Chin-Yeung Li @chinyeungli
  • Armijn Hemmel @armijnhemel
  • Sarita Singh @itssingh
  • Akanksha Garg @akugarg

Copyright scanning:

• Detect SPDX-FileCopyrightText as defined by the FSFE Reuse project
• Fix bug when using the --filter-clues command line option
  Thank you to Van Lindberg @VanL
• Allow calling copyright detection from text lines to ease integration
  Thank you to Jelmer Vernooij @jelmer

Package scanning:

• Add support for installed RPMs detection internally (not wired to scans)
  Thank you to Chin-Yeung Li @chinyeungli
• Improve handling of Debian copyright files with faster and more
  accurate license detection
  Thank you to Thomas Druez @tdruez
• Add new built-in support for installed_files report. Only available when
  used as a library.
• Improve support for RPM, npm, Debian, build scripts (Bazel) and Go packages
  Thank you to:
  • Divyansh Sharma @Divyansh2512
  • Jonothan Yang @JonoYang
  • Steven Esser @MaJuRG
• Add new support to collect information from semi-structured Readme files
  and related metadata files.
  Thank you to:
  • Jonothan Yang @JonoYang
  • Steven Esser @MaJuRG

Ouputs:

• Add new Debian copyright-formatted output.
  Thank you to Jelmer Vernooij @jelmer
• Fix bug in --include where directories where not skipped correctly
  Thank you to Pierre Tardy @tardyp

Misc. and documentation improvements:

• Update the way tests assertions are made
  Thank you to Aditya Viki @adityaviki
• Thank you to Aryan Kenchappagol @aryanxk02

The sources of third-party dependencies are available for download here and in:

• https://github.com/nexB/thirdparty-packages
• https://github.com/nexB/scancode-plugins