Merge branch 'include-composer-json' into 'master'

refactor: include `composer.json` in plugin distribution package

See merge request wpdesk/gitlab-ci!250

includes/deploy.yml

@@ -73,7 +73,7 @@ hooks docs refresh:
     - php -d memory_limit=-1 /usr/local/bin/composer install --no-dev --no-progress --optimize-autoloader --prefer-dist
     - rm auth.json
     - rm -rf build-coverage release tests docs .git .editorconfig .gitignore .gitlab-ci.yml apigen.neon phpunit.xml acceptance test_soap.php .gitlab
-    - rm -rf composer.json composer.lock auth.json phpcs.xml.dist phpunit-integration.xml phpunit-unit.xml composer.phar wp-cli.phar functional tmp_artifacts .tmp tools codeception.dist.yml .env.testing wp-install.sh
+    - rm -rf composer.lock auth.json phpcs.xml.dist phpunit-integration.xml phpunit-unit.xml composer.phar wp-cli.phar functional tmp_artifacts .tmp tools codeception.dist.yml .env.testing wp-install.sh
     - rm -rf phpcs.xml.dist phpunit-integration.xml phpunit-unit.xml wp-cli.phar functional tmp_artifacts scoper.inc.php phpstan.dist phpstan.neon.dist
     - rm -rf assets-src package.json package-lock.json .babelrc webpack.mix.js webpack.config.js README.md