Release notes for 0.33

[trbromley]

Updates to the release notes for 0.33.

Replaces the older PR: #4647

[github-actions]

Hello. You may have forgotten to update the changelog!
Please edit doc/releases/changelog-dev.md with:

• A one-to-two sentence description of the change. You may include a small working example for new features.
• A link back to this PR.
• Your name (or GitHub username) in the contributors section.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

❗ No coverage uploaded for pull request base (v0.33.0-rc0@2c9ef10). Click here to learn what that means.

Additional details and impacted files

@@              Coverage Diff               @@
##             v0.33.0-rc0    #4721   +/-   ##
==============================================
  Coverage               ?   99.64%           
==============================================
  Files                  ?      380           
  Lines                  ?    33993           
  Branches               ?        0           
==============================================
  Hits                   ?    33871           
  Misses                 ?      122           
  Partials               ?        0           

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[isaacdevlugt]

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