Detect lower camel case copyright holders

[JustinWonjaePark]

Summary

Improve copyright holder detection for lower camel case names.

• Reclassify matching JUNK tokens as MIXEDCAP when they immediately follow a copyright year on the same line.
• Restrict matching to lower camel case names to avoid broader changes to copyright parsing.

Tests

• venv/bin/pytest -q -p no:cacheprovider --test-suite all tests/cluecode/test_copyrights.py -k lower_camel_case_holder
  • 1 passed
• git diff --check develop...HEAD

Tasks

• Reviewed contribution guidelines
• PR is descriptively titled 📑
• Tests pass -- look for a green checkbox ✔️ a few minutes after opening your PR
• Commits are in uniquely-named feature branch and has no merge conflicts 📁
• Updated documentation pages (not applicable)
• Updated CHANGELOG.rst