1.1.3

CHANGES:

• Support MSVC compiler (@jonahbeckford, #137)
• Fix CI on Windows (test_conv.ml requires /dev/urandom) (@dinosaure, #138)
• Fix threads support (@dinosaure, #140)
• Delete the META trick needed for MirageOS 3 when we install digestif (@dinosaure, #141)
  This version of digestif breaks the compatibility with MirageOS 3
  and ocaml-freestanding. This PR should unlock the ability to
  use dune-cache.