v4.14.0

This is the final planned 4.x release. It introduces no breaking changes, but marks a large
number of APIs, classes, and methods as deprecated ahead of the 5.0.0 release. Every deprecated
path now emits an E_USER_DEPRECATED runtime warning in addition to a @deprecated docblock, so
you can identify and update affected code before upgrading.

Added

• UPGRADE-5.0.md — a full upgrade guide documenting every breaking change planned for 5.0.0

Deprecated

• APIs being sunset/removed in 5.0: Vonage\Meetings\Client, Vonage\ProactiveConnect\Client,
  Vonage\SimSwap\Client, and Vonage\NumberVerification\Client
• Credentials: Vonage\Client\Credentials\Gnp and its GNP auth handlers
  (GnpKeypairHandler, SimSwapGnpHandler, NumberVerificationGnpHandler), plus the previously
  deprecated BasicQueryHandler, TokenBodyHandler, and TokenQueryHandler
• Vonage\Client\Credentials\Keypair::getKey() — use getKeyRaw() instead
• Vonage\Client methods: send(), generateJwt() (use Vonage\JWT\TokenGenerator),
  get(), post(), put(), delete(), postUrlEncoded(), signRequest(), authRequest(),
  serialize(), and unserialize() — use APIResource directly for HTTP requests
• getAPIResource() / getApiResource() on all module clients (Account, Application,
  Conversation, Conversion, Insights, Messages, Numbers, Redact, Secrets, SMS, Subaccount, Users,
  Verify, Verify2, Voice) and on Vonage\Entity\IterableAPICollection
• Vonage\Client\APIClient interface
• Vonage\Client\ClientAwareInterface and Vonage\Client\ClientAwareTrait — use constructor
  injection instead
• Vonage\Client\Factory\MapFactory::hasApi() and getApi()
• Vonage\Entity\EntityInterface and Vonage\Entity\HasEntityTrait
• Vonage\Application\ApplicationInterface
• Vonage\Verify\Request, Vonage\Verify\RequestPSD2, and Vonage\Verify\VerificationInterface
• Vonage\Voice\Call\Call and Vonage\Voice\Call\Inbound — use Vonage\Voice\OutboundCall
• Vonage\Voice\NCCO\Action\Pay — being removed from the API

Full Changelog: 4.13.0...v4.14.0