Declare generate, apply and update as public

[abelsiqueira]

Mark generate, apply and update as public using the public API. They were already intended to be public by the definition of "documented and not prepended by -" (as opposed to _copy, for instance). Also use the change to add "pre" to the Test workflow.

Related issues

Closes #473

Checklist

• [x] I am following the contributing guidelines
• [x] Tests are passing
• [x] Lint workflow is passing
• [x] Docs were updated and workflow is passing
• [x] CHANGELOG.md was updated

[codecov[bot]]

Codecov Report

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

Project coverage is 100.00%. Comparing base (563ea65) to head (1b0b383). Report is 2 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #474 +/- ## ========================================= Coverage 100.00% 100.00% ========================================= Files 4 4 Lines 99 99 ========================================= Hits 99 99 ```

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