This snapshot of Anemone has been modified for use within the Metasploit Framework
* Extract links from additional elements in page.links()
* Insert a callback to use a custom Net::HTTP factory
* Insert a callback to tweak HTTP requests before they are sent
* Addition of core.shutdown() to stop all background threads
* Addition of a Rex::Proto::HTTP version of anemone/http
* Handle Rex::Proto::HTTP headers (not arrays)
* Disable freeze_options() since it can recurse into the framework/module options
* Addition of a page.request accessor to store the associated raw request
