Add maintenance intent to dune-project

Author: balat

dune-project

@@ -15,6 +15,7 @@
  (synopsis "A full-featured and extensible Web server")
  (description
   "Ocsigen Server is a Web Server that can be used either as a library for OCaml or as an executable (taking its configuration from a file). It has a very powerful extension mechanism that makes it very easy to plug your own OCaml modules for generating pages. Many extensions are already implemented, like a reverse proxy, content compression, access control, authentication, etc.")
+ (maintenance_intent "(latest)")
  (depends
   (ocaml (>= 4.08.1))
   (camlzip (>= 1.04))