feat(cli): detect breaking change syntax

[cdcabrera]

What's included

• feat(cli): detect breaking change syntax

Notes

• the original intention of keeping changelog-light "light" included the ability to provide your own custom message. the intention being the maintainer could simply fill in the blanks on breaking changes... for us personally this became annoying to use, now the tool reads the accepted syntax for breaking change commit messages (plus a slight variation to account for future language formats), this includes
  • 'BREAKING CHANGE:', 'BREAKING CHANGES:' within the commit message body
  • and ')!:', '!:'to account for commit message subject lines
• there is an aspect of "finding commits" that contain the breaking change syntax that could be deduped using a Set, however because of the way we're doing a find on the git hash this is unnecessary, currently, cmds.js line 195

How to test

Coverage and basic unit test check

1. update the NPM packages with $ yarn
2. $ yarn test
3. confirm tests come back clean

Example

...

Updates issue/story

ongoing

[codecov-commenter]

Codecov Report

Merging #91 (25da297) into main (31a1a44) will increase coverage by 0.99%.
The diff coverage is 94.44%.

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@@            Coverage Diff             @@
##             main      #91      +/-   ##
==========================================
+ Coverage   92.14%   93.14%   +0.99%     
==========================================
  Files           5        5              
  Lines         242      277      +35     
  Branches       98      109      +11     
==========================================
+ Hits          223      258      +35     
  Misses         18       18              
  Partials        1        1              

Files	Coverage Δ
src/index.js	86.66% <100.00%> (ø)
src/cmds.js	95.00% <96.42%> (+2.14%)	⬆️
src/files.js	89.79% <50.00%> (ø)
src/parse.js	96.80% <95.23%> (+0.42%)	⬆️

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