v0.1.0 2019-05-16 Paris (France)

• Use experimental feature of variants with dune (#25, @dinosaure, review @rgrinberg) checkseum requires at least dune.1.9.2
• Add conflict with < mirage-xen-posix.3.1.0 packages (#21, @hannesm)
• Provide unsafe_* functions (@dinosaure)
• Re-organize C implementation as digestif (@dinosaure)
• Remove #include <stdio.h> in C implementation (@dinosaure)
• Avoid partial application of functions, optimization (#19, @dinosaure)
• Add ocamlformat support (@dinosaure)
• cross-compilation adjustement about MirageOS backends (#18, @hannesm)