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

src/wp-includes/class-wp-widget.php

@@ -164,7 +164,8 @@ class WP_Widget {
 		$this->name            = $name;
 		$this->option_name     = 'widget_' . $this->id_base;
 		$this->widget_options  = wp_parse_args(
-			$widget_options, array(
+			$widget_options,
+			array(
 				'classname'                   => $this->option_name,
 				'customize_selective_refresh' => false,
 			)