Lint PHP files

Author: OndraM

composer.json

@@ -24,7 +24,8 @@
     "squizlabs/php_codesniffer": "^2.6",
     "php-mock/php-mock-phpunit": "^1.1",
     "php-coveralls/php-coveralls": "^2.0",
-    "symfony/var-dumper": "^3.3 || ^4.0"
+    "symfony/var-dumper": "^3.3 || ^4.0",
+    "jakub-onderka/php-parallel-lint": "^0.9.2"
   },
   "autoload": {
     "psr-4": {
@@ -47,6 +48,7 @@
       "vendor/bin/phpcbf --standard=PSR2 ./lib/ ./tests/"
     ],
     "analyze": [
+      "vendor/bin/parallel-lint -j 10 ./lib ./tests",
       "vendor/bin/phpstan.phar analyze ./lib ./tests --level 2 -c phpstan.neon --ansi"
     ]
   },