vendor dir ignored
Merge pull request #210 from MacDada/vendor_dir_ignored

`vendor` dir ignored
Fixed a problem where sizeof() would be detected, but \sizeof() would not (Yes, this fix will still ignore \my\ns\sizeof())
Changelog + unit tests + coding standards
Merge branch 'master' into phpcs-fixer

Conflicts:
	CodeSniffer/Standards/Generic/Sniffs/PHP/ForbiddenFunctionsSniff.php
	package.xml