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/utils.php

@@ -206,7 +206,8 @@ class testXMLParser {
 					'XML error: %s at line %d',
 					xml_error_string( xml_get_error_code( $this->xml ) ),
 					xml_get_current_line_number( $this->xml )
-				), E_USER_ERROR
+				),
+				E_USER_ERROR
 			);
 			xml_parser_free( $this->xml );
 		}