Update SPDX license list to version 3.28

[ffaf1]

This PR also adds adds a file format changelog for 3.16, which we missed.

---

• Patches conform to the coding conventions.
• Any changes that could be relevant to users have been recorded in the changelog.
  * [ ] Is the change significant? If so, remember to add significance: significant in the changelog file.
• The documentation has been updated, if necessary.
• Manual QA notes have been included.
  * [ ] Tests have been added. (Ask for help if you don’t know how to write them! Ask for an exemption if tests are too complex for too little coverage!) N/A

QA Notes

cabal init -n test
cd test/
# Modify the `license:` field to `Advanced-Cryptics-Dictionary`
cabal check  # it should *not* complain about the license

[ulysses4ever]

thanks!