- 0.6.0.0 :
    * Changed the interface to provide more information to and from workers
    * Implemented HTTP/2 push
    * Upgraded dependencies to 1.0. for http2 package
    * Extended channel interface in such a way that latency is reduced, as a result,
      the test suite is completely broken. Please wait for 0.6.0.1 release.

- 0.5.5.0 :
    * Made HeaderEditor a Monoid instance
    * Trying to WINDOW_UPDATE an unexistent stream aborts the session, as it should

- 0.5.4.0 :
    * Added the type HTTP500PrecursorException and corresponding test
    * Improved test suite so that requests can be simulated a little bit more easily
    * Re-export type Headers from module HTTPHeaders

- 0.5.3.2 :
    * Added this changelog.
    * Fixed the lower limit for the time package.
    * Enforce first frame being a settings frame when receiving.
    * Added a couple of tests.