Apply php-cs-fixer fixers

- braces
- function_declaration
- lowercase_keywords
- method_argument_space
- no_spaces_inside_parenthesis
- no_trailing_whitespace
- no_trailing_whitespace_in_comment
- single_blank_line_at_eof

tests/MinifyImportProcessorTest.php

@@ -23,7 +23,10 @@ class MinifyImportProcessorTest extends TestCase
             realpath($linDir . '/lib/css/example.css'),
         );
 
-        $this->assertEquals($expectedIncludes, Minify_ImportProcessor::$filesIncluded,
-            'included right files in right order');
+        $this->assertEquals(
+            $expectedIncludes,
+            Minify_ImportProcessor::$filesIncluded,
+            'included right files in right order'
+        );
     }
 }