| ⇢ | A | Jetpack_JSON_API_Sync_Histogram_Endpoint added |
| ⇢ | C | Jetpack_Sync_WP_Replicastore::checksum_histogram() added | |
| ⇢ | B | Jetpack_JSON_API_Sync_Histogram_Endpoint::result() added | |
| ⇢ | A | Jetpack_Sync_Listener::get_instance() added | |
| ⇢ | A | Jetpack_Sync_Sender::get_instance() added | |
| ⇢ | A | Jetpack_Core_Json_Api_Endpoints::validate_stats_ro... added | |
| ⇢ | A | Jetpack_Core_Json_Api_Endpoints::sanitize_stats_al... added | |
| A | ↛ | Jetpack_Core_Json_Api_Endpoints::__construct() removed | |
| A | ↛ | Jetpack_Core_Json_Api_Endpoints::init() removed | |
| A | ↛ | Jetpack_Sync_Sender::getInstance() removed | |
| A | ↛ | Jetpack_Sync_Listener::getInstance() removed |