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.