Release that builds with a recent-ish OCaml version

[sternenseemann]

A release that builds with a more recent OCaml version would be nice as 1.1.6 is quite old by now and is a lot of trouble getting to compile with, say OCaml 4.08 or even 4.10.

[ygrek]

Indeed, release is due, thanks for reminder.
I wonder who has access to the signing key 0x41259773973A612A 🐧
Otherwise I will sign myself for the time being :]
cc @yminsky @krifisk

[sternenseemann]

Any updates on this?

[Mic92]

Friendly bump.