opium v0.11.0

now with 50% more Lwt
Merge pull request #3206 from rgrinberg/master

opium v0.11.0
bitstring: patch data bug with 4.02
ipaddr depends on type_conv

This was caused by https://github.com/ocaml/opam-repository/pull/3197
Merge pull request #3207 from camlunity/master

bitstring: patch data bug with 4.02
Merge pull request #3208 from samoht/master

ipaddr depends on type_conv
require at least ctypes-0.3.3
depend on type_conv for sexplib.syntax
Merge pull request #3210 from hannesm/update-ctypes-req

require at least ctypes-0.3.3
Add package Ketrew 0.0.0
Added back install files from 1.7.1 -- binary was not being installed.
containers 0.6.1.2 (bugfix)
Merge pull request #3211 from smondet/ketrew.0.0.0

Add package Ketrew 0.0.0
Merge pull request #3212 from johnwhitington/master

Added back install files from 1.7.1 -- binary was not being installed.
+base64.1.1.0
Merge pull request #3214 from mirage/base64.1.1

+base64.1.1.0
Merge pull request #3213 from c-cube/containers-0.6.1.2

containers 0.6.1.2 (bugfix)
riakc_ppx 3.1.1 (fixes bitstring build error)
set url from tar.gz to zip
fix opam