Apply fixes from StyleCI (#252)

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Co-authored-by: StyleCI Bot <bot@styleci.io>

Merge pull request #248 from pug-php/enable-php-8-test

Re-enable PHP 8 CI tests

Merge pull request #237 from pug-php/analysis-J2rOwV

Apply fixes from StyleCI

Drop Phug < 1.5

Merge pull request #233 from dadajuice/stream-wrapper-correction

#232 Fix by adding missing StreamWrapper interface method

Merge pull request #228 from pug-php/ensure-cache-is-used

Remove views directory after caching in tests

Allow Phug 1.0

Fix example unused variable

Enable support of js-phpize 2 (#197)

Cleanup annotations