Changes made last year under the title "[[ https://gerrit.wikimedia.org/r/c/wikimedia/textcat/+/431492 | Move TextCat class into src/ ]]" also changed the `require` statements in `felis.php`, `catus.php`, and `lm2php.php` from requiring `TextCat,php` to requiring `/vendor/autoload.php`, thus making MediaWiki a dependency for TextCat.
`felis.php`, `catus.php`, and `lm2php.php` are intended to be stand-alone command line tools to build new models, do language identification, and convert original Perl text_cat models to the new PHP format, respectively. MediaWiki/CirrusSearch only uses `TextCat.php` and shouldn't modify the others.
Another change, "[[ https://gerrit.wikimedia.org/r/c/wikimedia/textcat/+/414941 | Remove manual require'ing of the TextCat class ]]," makes it so that phpunit will not run when TextCat is cloned as a stand-alone repo.
Revert these changes so that TextCat can still function as a stand-alone command-line utility.