Release 2.9.0

CHANGES:

* Add support for OCaml 4.14 (ocaml-community#360 @kit-ty-kate)
* Document options in utop(1) manpage (ocaml-community#364 ocaml-community#365 @lindig)

Distribution 2.8.0

Distribution 2.7.0

release 2.6.0

release 2.5.0

update CHANGES for release 2.4.3

Distribution 2.4.2

update CHANGES for release 2.4.1

README: update dependencies

Distribution 2.3.0