merlin: release v1.4
Add irc-client.0.1.1

The main change is that Lwt is now an optional dependency.

Signed-off-by: John Else <john.else@citrix.com>
Merge pull request #1133 from trefis/master

merlin: release v1.4
Merge pull request #1132 from mirage/master

+cow.0.7.0
Add archive checksum for irc-client.0.1.1

Signed-off-by: John Else <john.else@citrix.com>
Merge pull request #1134 from johnelse/irc-client.0.1.1

Add irc-client.0.1.1
travis: updates to try using opam-1.0, opam-1.1 and ocaml 3.12.1