Don't apply new DocCommentWrapper sniff to test files
Ignore camel caps related violations in extended classes
Change unit config exclusion pattern to be OS-agnostic
Add fixing of "Classes.ClassCreateInstance" sniff

- fixing 100% of errors detected in the sniff
- add support for PHP 5.4 class instantiation syntax
Add fixing of "Classes.ClassDeclaration" sniff

- removed redundant code for checking that class closing brace is on it's own line
- also test the case, when there are too many empty lines after class declaration
Simplifying ClassDeclaration sniff using changes from squizlabs/PHP_CodeSniffer#7ab4d28a6791f87cc12d3d4ce2e4a57cf351d0e3