Some classes and one trait had some mismatch values for their "@author"
annotation and this commit will fix the mismatch putting the correct
authors.
I used the "git blame" command to find out which people changed the file
and created a list based on that information.
Signed-off-by: Henrique Moody <henriquemoody@gmail.com>
The "AbstractSearcher" already does most of the job that "CountryCode"
was doing, so using it as parent class made more sense. That also makes
the validation case-sensitive which is not a problem since the standard
ISO 3166-1 in fact enforces an specific case for the country codes.
The documentation about the rule is also updated.
Co-Authored-By: Henrique Moody <henriquemoody@gmail.com>