ocaml/opam-repository — pull request #2901 by whitequark (2014-10-20 18:25:06+00:00)
Title: +utop.1.16

1.16 (2014-10-20)
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* make camlp4 support optional
* require OCaml 4.01.0 or newer
* implement wrapper for -safe-string

Also update earlier versions to depend on camlp4 explicitly, in preparation of it becoming an optional dependency of Lwt.