Feature/issue 184 copyright headers

[danielfromearth]

GitHub Issue: #184

Description

This change adds copyright headers to the source files.

PR Acceptance Checklist

• [n/a] Unit tests added/updated and passing.
• [n/a] Integration testing
• [x] CHANGELOG.md updated
• [x] Documentation updated (if needed).

---

📚 Documentation preview 📚: https://ncompare--221.org.readthedocs.build/en/221/

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 90.06%. Comparing base (f313c05) to head (ac560c4). Report is 105 commits behind head on develop.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## develop #221 +/- ## =========================================== + Coverage 89.95% 90.06% +0.10% =========================================== Files 5 6 +1 Lines 468 473 +5 =========================================== + Hits 421 426 +5 Misses 47 47 ```

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.