release 2.2.0

CHANGES.md

@@ -1,3 +1,13 @@
+## v2.2.0 (2019-07-20)
+
+- Previously if the client closed the connection while cohttp was
+  handling a request, the server would crash (by default, unless the
+  user overrode that using `on_exn` or changing Lwt's async exception
+  handler). Now, cohttp will just log this at `info` level and
+  continue. Exceptions produced by user code are logged as errors,
+  while other exceptions generated by cohttp call back to the conduit
+  exception handler, as before. (#669 @talex5)
+
 ## v2.1.3 (2019-07-12)
 
 - support uri.3.0.0 that has optional sexp support (#668 @avsm)