| ⇢ | A | RequestHeadersAlter added | |
| A | ↛ | ReverseProxyHelperRequestAlter removed |
| ⇢ | A | RequestHeadersAlter::alter() added | |
| ⇢ | A | RequestHeadersAlter::__construct() added | |
| A | ↛ | ReverseProxyHelperRequestAlter::alter() removed | |
| A | ↛ | ReverseProxyHelperRequestAlter::__construct() removed |