Release 5.3.0

[joaander]

Minor and major releases:

• Update tutorial submodule.
• Check for new or duplicate contributors since the last release:
  comm -13 (git log $(git describe --tags --abbrev=0) --format="%aN <%aE>" | sort | uniq | psub) (git log --format="%aN <%aE>" | sort | uniq | psub).
  Add entries to .mailmap to remove duplicates.
• Ensure that added features have Sybil examples.
• Run hoomd-benchmarks, check for performance
  regressions with the previous release, and post the tables in the release pull request.
• Run hoomd-validation.

All releases:

• Review change log.
• Check readthedocs build, especially change log formatting.
• Run bumpversion.
• Tag and push.
• Update conda-forge recipe.
• Update glotzerlab-software.
• Update hoomd-component-template.
• Update hoomd-md-pair-template.
• Update hoomd-hpmc-shape-template.
• Update hpmc-energy-template.