add test for Rules to simplify the code by removing unnecessary APIs.
change how to load locale specific filters and types;
move locale files to Locale/{$locale}/validation...php.
applyType to return the object; just in case it starts to clone self.
remove multi-byte filters from en locale; remove mbCheckKana which does not exist.
test the case when rule start with object.
more *attractive* summary on Validation package.
support par-4 autoload with composer.
test locale; remove Locale in use statement;
use new locale directory structure for Message. add getInstance in Message, just like Rules.
return current locale; nothing to do if no locale specified.
find messages in ValueTo (not in Validate).
refactor find method.
test locale, 'ja'.
make ValueTO easy to use (shorten method names).
remove unnecessary API.
Validation to manage array input.
use *ideal* API name.
add test suites; isError, that is the API.
test Validation class.
add verify method in Validation (as stated in the README.md sample).
write more about coding in README.