| ⇢ | A | functions.php ➔ jetpack_compat_require_defined_fun... added | |
| ⇢ | A | client.php ➔ jetpack_tracks_get_identity() added | |
| ⇢ | A | client.php ➔ jetpack_tracks_record_event() added | |
| B | ↛ | client.php ➔ jetpack_tracks_get_identity() removed | |
| A | ↛ | client.php ➔ jetpack_tracks_build_event_obj() removed | |
| A | ↛ | client.php ➔ jetpack_tracks_record_event() removed | |
| A | ↛ | client.php ➔ jetpack_tracks_record_event_raw() removed |