| ⇢ | A | CachePlugin added |
| ⇢ | B | CachePlugin::handleRequest() added | |
| ⇢ | B | CachePlugin::getMaxAge() added | |
| ⇢ | A | CachePlugin::isCacheable() added | |
| ⇢ | A | CachePlugin::getCacheControlDirective() added | |
| ⇢ | A | CachePlugin::__construct() added | |
| ⇢ | A | CachePlugin::createCacheKey() added |