Some requests' timestamps may be inaccurate

[OdNairy]

Alpha Warning: Some requests' timestamps may be inaccurate. See Known Issues in the README for more information.
What is this about? We have no Known Issues section in README so users will need some info about it. Also it's a bad design to log framework related staff into default NSLog.

[Legoless]

This is related to the NSURLConnectionDataDelegate not being called in certain cases, which happens if Accept-Encoding HTTP header is not set in the HTTP request. PonyDebugger has similar problem.