Add `PSR-17` Support and Remove deprecated Class/Functions

[ghostwriter]

Q	A
New Feature	yes

Description

• Resolve #25

Added

• [BC] PSR-17 Support

Changed

• [BC] The parameter $responseFactory of Laminas\Stratigility\Handler\NotFoundHandler#__construct() changed from callable to a non-contravariant Psr\Http\Message\ResponseFactoryInterface
• [BC] The parameter $responseFactory of Laminas\Stratigility\Middleware\ErrorHandler#__construct() changed from callable to a non-contravariant Psr\Http\Message\ResponseFactoryInterface
• [BC] The parameter $responseFactory of Laminas\Stratigility\Middleware\ErrorHandler#__construct() changed from callable to Psr\Http\Message\ResponseFactoryInterface

Removed

• [BC] Class Laminas\Stratigility\Middleware\NotFoundHandler has been deleted
• [BC] Function Zend\Stratigility::doublePassMiddleware has been deleted
• [BC] Function Zend\Stratigility::host has been deleted
• [BC] Function Zend\Stratigility::middleware has been deleted
• [BC] Function Zend\Stratigility::path has been deleted

[lcobucci]

The target branch should be 4.0.x, right?

[ghostwriter]

sounds good to me, @lcobucci I'll change the target branch once the 4.0.x branch gets created.

[lcobucci]

@ghostwriter apologies for the huge delay. Docs look good to me, let's :ship: