Composer install does not require zend-filter

[delliriun]

Using composer require zendframework/zend-validator will not require zend-filter wich is a requirement for Zend\Validator\Digits.

[froschdesign]

It's already there. Look at the suggest section:

zend-validator/composer.json

Lines 34 to 36 in 87e743d

	"suggest": {
	"zendframework/zend-db": "Zend\\Db component, required by the (No)RecordExists validator",
	"zendframework/zend-filter": "Zend\\Filter component, required by the Digits validator",

[delliriun]

Thank you Frank.