| ⇢ | A | WPCOM_REST_API_V2_Endpoint_Search added | 
| ⇢ | A | WPCOM_REST_API_V2_Endpoint_Search::get_search_resu... added | |
| ⇢ | A | WPCOM_REST_API_V2_Endpoint_Search::register_routes... added | |
| ⇢ | A | WPCOM_REST_API_V2_Endpoint_Search::__construct() added | |
| ⇢ | A | Jetpack::reconnection_completed() added | |
| B | ↗ | A | google-calendar.php ➔ load_assets() improved | 
| B | ↗ | A | Jetpack_Gutenberg::load_scripts_as_required() improved | 
| D | ↗ | C | mailchimp.php ➔ load_assets() improved | 
| B | ↗ | A | Jetpack_Gutenberg::block_classes() improved | 
| C | ↘ | D | AutoloadProcessor::processClassmap() got worse | 
| C | ↛ | calendly.php ➔ load_assets() removed | |
| B | ↛ | calendly.php ➔ deprecated_render_button_v1() removed | |
| A | ↛ | calendly.php ➔ enqueue_calendly_js() removed | |
| A | ↛ | calendly.php ➔ get_attribute() removed | |
| A | ↛ | calendly.php ➔ register_block() removed |