Coding Standards: Upgrade WPCS to 1.0.0

WPCS 1.0.0 includes a bunch of new auto-fixers, which drops the number of coding standards issues across WordPress significantly. Prior to running the auto-fixers, there were 15,312 issues detected. With this commit, we now drop to 4,769 issues.

This change includes three notable additions:
- Multiline function calls must now put each parameter on a new line.
- Auto-formatting files is now part of the `grunt precommit` script. 
- Auto-fixable coding standards issues will now cause Travis failures.

Fixes #44600.



git-svn-id: https://develop.svn.wordpress.org/trunk@43571 602fd350-edb4-49c9-b593-d223f7449a82

tests/phpunit/includes/factory/class-wp-unittest-factory-for-attachment.php

@@ -27,7 +27,8 @@ class WP_UnitTest_Factory_For_Attachment extends WP_UnitTest_Factory_For_Post {
 			array(
 				'file'        => '',
 				'post_parent' => 0,
-			), $args
+			),
+			$args
 		);
 
 		return wp_insert_attachment( $r, $r['file'], $r['post_parent'] );