Fix opam file field ordering and update it according to v1.0.0

Signed-off-by: Nathan Rebours <[email protected]>

ptime.opam

@@ -1,36 +1,34 @@
 opam-version: "2.0"
 name: "ptime"
-maintainer: "Daniel Bünzli <daniel.buenzl [email protected]>"
-authors: ["The ptime programmers"]
-homepage: "https://github.com/dune-universe/ptime"
-dev-repo: "git+https://github.com/dune-universe/ptime.git"
-bug-reports: "https://github.com/dbuenzli/ptime/issues"
-tags: [ "time" "posix" "system" "org:erratique" ]
-license: "ISC"
-depends: [
-  "dune"
-  "ocaml" {>= "4.01.0"}
-  "result"
-]
-depopts: [ "js_of_ocaml" ]
 synopsis: "POSIX time for OCaml"
-description: """
+description: """\
 Ptime has platform independent POSIX time support in pure OCaml. It
 provides a type to represent a well-defined range of POSIX timestamps
 with picosecond precision, conversion with date-time values,
-conversion with [RFC 3339 timestamps][rfc3339] and pretty printing to a
-human-readable, locale-independent representation.
+conversion with [RFC 3339 timestamps][rfc3339] and pretty printing to
+a human-readable, locale-independent representation.
 
 The additional Ptime_clock library provides access to a system POSIX
 clock and to the system's current time zone offset.
 
 Ptime is not a calendar library.
 
-Ptime depends on the `result` compatibility package. Ptime_clock
-depends on your system library. Ptime_clock's optional JavaScript
-support depends on [js_of_ocaml][jsoo]. Ptime and its libraries are
-distributed under the ISC license.
+Ptime has no dependency. Ptime_clock depends on your system library or
+JavaScript runtime system. Ptime and its libraries are distributed
+under the ISC license.
 
 [rfc3339]: http://tools.ietf.org/html/rfc3339
-[jsoo]: http://ocsigen.org/js_of_ocaml/"""
+
+Home page: http://erratique.ch/software/ptime"""
+maintainer: "Daniel Bünzli <daniel.buenzl [email protected]>"
+authors: ["The ptime programmers"]
+license: "ISC"
+tags: [ "time" "posix" "system" "org:erratique" ]
+homepage: "https://github.com/dune-universe/ptime"
+bug-reports: "https://github.com/dbuenzli/ptime/issues"
+depends: [
+  "dune"
+  "ocaml" {>= "4.08.0"}
+]
 build: [ "dune" "build" "-p" name "-j" jobs "@install" "@runtest" {with-test} ]
+dev-repo: "git+https://github.com/dune-universe/ptime.git"