Allow "squizlabs/php_codesniffer": "^4"

[tacman]

Version 4 is out. It bumps the minimum PHP version and removes some css/js stuff.

[MickaelN]

I would be happy to try submitting a pull request for PHPCS 4 support. Before we begin: would you prefer dual compatibility with PHPCS 3 and 4, or only with PHPCS 4?

[tacman]

Me personally? Just PHP CS 4, but I have an unhealthy tendency toward using the latest releases of everything.