| A | ↛ | CrawlerDetect removed |
| ⇢ | A | Headers::getPrefetchHeaders() added | |
| B | ↛ | CrawlerDetect::setHttpHeaders() removed | |
| A | ↛ | CrawlerDetect::setUserAgent() removed | |
| A | ↛ | CrawlerDetect::isCrawler() removed | |
| A | ↛ | CrawlerDetect::__construct() removed | |
| A | ↛ | CrawlerDetect::getUaHttpHeaders() removed | |
| A | ↛ | CrawlerDetect::getMatches() removed | |
| A | ↛ | CrawlerDetect::compileRegex() removed |