Allow cache headers overwrite
cleanup cache header overwrite options
Merge pull request #151 from FriendsOfSymfony/gv-allow-cache-overwrite

Allow override of request cache headers
hhvm broke their xml support. ignore it until they can fix it
Merge pull request #153 from FriendsOfSymfony/hhvm-broke-xml

hhvm broke their xml support. ignore it until they can fix it
Merge remote-tracking branch 'origin/1.0'
Implemented Symfony reverse proxy support for user context hash.

Ref #26
Added tests for Symfony RP