Added code-checker

Author: janpecha

code-checker.php

@@ -0,0 +1,7 @@
+<?php
+
+declare(strict_types=1);
+
+return function (JP\CodeChecker\CheckerConfig $config) {
+	JP\CodeChecker\Sets\CzProjectMinimum::configure($config);
+};

src/CssMinifier.php

@@ -1,5 +1,7 @@
 <?php
 
+	declare(strict_types=1);
+
 	namespace Cz\CssMinifier;
 
 
@@ -10,8 +12,8 @@ class CssMinifier
 
 
 		/**
-		 * @link	https://github.com/nette/build-tools/blob/master/tasks/minifyJs.php#L51-L56
-		 * @author	David Grudl, 2011
+		 * @link   https://github.com/nette/build-tools/blob/master/tasks/minifyJs.php#L51-L56
+		 * @author David Grudl, 2011
 		 */
 		public function minify(string $s): string
 		{
@@ -64,4 +66,3 @@ public function minify(string $s): string
 			return $buffer;
 		}
 	}
-

tests/CssMinifier/basic.phpt

@@ -1,4 +1,7 @@
 <?php
+
+declare(strict_types=1);
+
 use Tester\Assert;
 
 require __DIR__ . '/../bootstrap.php';
@@ -36,4 +39,3 @@ Assert::same('.classname{border-top:1px;border-bottom:2px}', $minifier->minify("
     border-top: 1px; ;
     border-bottom: 2px;;;
 }"));
-