Google now follows what they call "Dynamic Rendering" where they allow you to serve prerendered pages directly to Googlebot based on a user agent check.

More information on Google's Dynamic Rendering here: https://prerender.io/documentation/google-support

• Fix an issue with GZip response.

• Update service URL

• Minimum PHP version has been raised to PHP 5.4 to take advantage of methods needed to decompress Gzip
• ZfrPrerender can now returns Gzip responses from Prerender
• New crawler user agents were added by default

• Allow to add a Prerender token in module options (for analytics)

• [BC] Remove Google Bot, Yahoo and BingBot from the crawler's list, because those search engines support _escaped_fragment_ and want to ensure people aren't penalized for cloaking
• Prerender listener now triggers two events: "prerender.pre" and "prerender.post". This allows you to cache the response and return it without hitting the Prerender service
• The priority the listener is registered has been lowered from 10000 to 1000

• Add "xml" extension to blacklist to prevent a problem that can occur with sitemap

• Add Twitterbot User-Agent

• Add support for escapedfragment_ query param for detecting a bot
• Add Facebook crawler User-Agent

• Initial release