| ⇢ | A | Config_PersistentCache added | |
| D | ↗ | D | DataQuery improved |
| D | ↗ | D | Requirements_Backend improved |
| ⇢ | A | Config_PersistentCache::__construct() added | |
| ⇢ | A | Config_PersistentCache::flush() added | |
| ⇢ | A | Config_PersistentCache::set() added | |
| ⇢ | A | Config::disablePersistentCache() added | |
| ⇢ | A | Config::isPersistentCacheDisabled() added | |
| A | ↘ | B | Config::get() got worse |