| B | ↘ | C | Jetpack_Signature got worse |
| ⇢ | D | Jetpack::wp_rest_authenticate() added | |
| ⇢ | B | Abstract_Jetpack_Site::get_icon() added | |
| ⇢ | A | Jetpack::wp_rest_authentication_errors() added | |
| ⇢ | A | Jetpack::reset_saved_auth_state() added | |
| A | ↛ | Jetpack_Site::get_icon() removed |