Prepare 5.3.0 release

[nyamsprod]

Added

• Pdp\PublicSuffixListSection interface implemented by Pdp\Rules and Pdp\PublicSuffix
• Pdp\DomainInterface interface implemented by Pdp\Domain and Pdp\PublicSuffix
• Pdp\Domain::getContent replaces Pdp\Domain::getDomain
• Pdp\Domain::withPublicSuffix updates the Pdp\Domain public suffix part.
• Pdp\Domain::withSubDomain updates the Pdp\Domain sub domain part.
• Pdp\Domain::withLabel adds a new label to the Pdp\Domain.
• Pdp\Domain::withoutLabel removes a label from the Pdp\Domain.
• Pdp\Domain::resolve attach a public suffix to the Pdp\Domain.
• Pdp\Domain::isResolvable tells whether the current Pdp\Domain can have a public suffix attached to it or not.
• Pdp\PublicSuffix::createFromDomain returns a new Pdp\PublicSuffix object from a Pdp\Domainobject

Fixed

• Pdp\Domain domain part computation (public suffix, registrable domain and sub domain)
• Pdp\Domain and Pdp\PublicSuffix host validation compliance to RFC improved
• Improve Pdp\Converter and Pdp\Manager class to better report error on IDN conversion.
• Improve Pdp\Installer vendor directory resolution see PR #222

Deprecated

• Pdp\Domain::getDomain use instead Pdp\Domain::getContent
• Pdp\Rules::ALL_DOMAINS use the empty string instead

Removed

• None