• Allow attaching any Psr\Http\Message\StreamInterface implementation to the request body via attachBody()
• Allow setting a return type of Psr\Http\Message\StreamInterface to get a stream response
• Added docs generated using PHPDocumentor to the docs folder. Open docs/index.html in a browser to get a better view of our classes, their properties, property types, available methods with their argument and return types
• v1 and beta model updates