| ⇢ | A | DelegateProxy added | |
| ⇢ | A | MiddlewarePipe added | |
| A | ↛ | Stack removed | |
| A | ↛ | DelegateToCallableAdapter removed |
| ⇢ | A | MiddlewarePipe::dispatch() added | |
| ⇢ | A | MiddlewarePipe::process() added | |
| ⇢ | A | DelegateProxy::__construct() added | |
| ⇢ | A | DelegateProxy::__invoke() added | |
| ⇢ | A | MiddlewarePipe::__construct() added | |
| ⇢ | A | MiddlewarePipe::append() added | |
| ⇢ | A | MiddlewarePipe::prepend() added | |
| A | ↛ | Stack::process() removed | |
| A | ↛ | Stack::dispatch() removed | |
| A | ↛ | Stack::__construct() removed | |
| A | ↛ | Stack::append() removed | |
| A | ↛ | Stack::prepend() removed | |
| A | ↛ | DelegateToCallableAdapter::__construct() removed | |
| A | ↛ | DelegateToCallableAdapter::__invoke() removed |