Support for User, Request Data?

Is there interest in expanding functionality into include user information and request information?

I feel both pieces are personally critical for really debugging a web app with users. Adding them is pretty easy, though I would love to think about what the best interface would be.

https://github.com/cloudflare/raven-lua/compare/master...snap-cloud:snapcloud

Getting request data would be most useful if there were a function for common server configs -- I am happy to provide one for OpenResty (based in part on resty.rollbar).