feat(changelog)!: add postprocessors

[PSeitz]

Description

Allow same transformations on the final output as with the git commit preprocessor.
This will enable things like replacing usernames with github usernames #132

How Has This Been Tested?

tested locally

Types of Changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation (no code change)
• Refactor (refactoring production code)
• Other

Checklist:

• My code follows the code style of this project.
• I have updated the documentation accordingly.
• I have formatted the code with rustfmt.
• I checked the lints with clippy.
• I have added tests to cover my changes.
• All new and existing tests passed.

[orhun]

Hello, thanks for the contribution! 🐻

Can you maybe provide an example about this feature in the documentation? It is not clear what changes are made from the code.

[orhun]

Also, isn't this a library-wise breaking change since CommitPreprocessor is renamed as TextProcessor?

[PSeitz]

Also, isn't this a library-wise breaking change since CommitPreprocessor is renamed as TextProcessor?

Yes, I didn't know it's also used as a library.

I updated the docs with the new feature.

[PSeitz]

Fixed the commit message by squashing

[PSeitz]

The test failure is unrelated

[orhun]

Had some comments / suggestions.

[orhun]

Can you also check out #165 and pre-empt your opinion before this PR is merged?

[codecov-commenter]

Codecov Report

Patch coverage: 70.59% and project coverage change: +0.66 🎉

Comparison is base (263cb6c) 43.66% compared to head (6b060f8) 44.32%.

❗ Current head 6b060f8 differs from pull request most recent head 38c9e8d. Consider uploading reports for the commit 38c9e8d to get more accurate results

❗ Your organization is not using the GitHub App Integration. As a result you may experience degraded service beginning May 15th. Please install the Github App Integration for your organization. Read more.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #155      +/-   ##
==========================================
+ Coverage   43.66%   44.32%   +0.66%     
==========================================
  Files          12       12              
  Lines         575      580       +5     
==========================================
+ Hits          251      257       +6     
+ Misses        324      323       -1     

Flag	Coverage Δ
unit-tests	44.32% <70.59%> (+0.66%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
git-cliff-core/src/config.rs	41.67% <50.00%> (+4.17%)	⬆️
git-cliff-core/src/changelog.rs	55.67% <83.34%> (+1.21%)	⬆️
git-cliff-core/src/commit.rs	95.53% <100.00%> (+3.98%)	⬆️

☔ View full report in Codecov by Sentry.
📢 Do you have feedback about the report comment? Let us know in this issue.

[welcome]

Congrats on merging your first pull request! ⛰️