Fixes #209 - happy new year!

[ascopes]

Closes #209 ready for 2023.

This also adds licenses to a few more files that were not covered previously.

[codecov-commenter]

Codecov Report

❗ No coverage uploaded for pull request base (main@66f9126). Click here to learn what that means.
The diff coverage is 40.00%.

@@           Coverage Diff           @@
##             main     #210   +/-   ##
=======================================
  Coverage        ?   67.99%           
=======================================
  Files           ?       72           
  Lines           ?     2431           
  Branches        ?      227           
=======================================
  Hits            ?     1653           
  Misses          ?      713           
  Partials        ?       65           

Impacted Files	Coverage Δ
...s/jct/assertions/AbstractContainerGroupAssert.java	28.57% <ø> (ø)
...hub/ascopes/jct/assertions/AbstractEnumAssert.java	0.00% <ø> (ø)
...s/jct/assertions/AbstractJavaFileObjectAssert.java	0.00% <ø> (ø)
...thub/ascopes/jct/assertions/ClassLoaderAssert.java	0.00% <ø> (ø)
...thub/ascopes/jct/assertions/CompilationAssert.java	35.08% <ø> (ø)
...ithub/ascopes/jct/assertions/DiagnosticAssert.java	0.00% <ø> (ø)
...b/ascopes/jct/assertions/DiagnosticKindAssert.java	0.00% <ø> (ø)
...b/ascopes/jct/assertions/DiagnosticListAssert.java	31.70% <ø> (ø)
...b/ascopes/jct/assertions/JavaFileObjectAssert.java	0.00% <ø> (ø)
...copes/jct/assertions/JavaFileObjectKindAssert.java	0.00% <ø> (ø)
... and 62 more

[github-actions]

Test Results

  1 341 files  ±  0    1 341 suites  ±0   3s ⏱️ ±0s
17 339 tests +  8  17 263 ✔️ +  8  76 💤 ±0  0 ❌ ±0 
18 986 runs   - 56  18 910 ✔️  - 56  76 💤 ±0  0 ❌ ±0 

Results for commit cc016ec. ± Comparison against base commit 66f9126.

♻️ This comment has been updated with latest results.