Fix linting problems on opam files and set minimum msgpck version

Author: andersfugmann

Makefile

@@ -1,4 +1,4 @@
-.PHONY: build clean install uninstall reinstall test update-version release doc
+.PHONY: build clean install uninstall reinstall test release doc
 .DEFAULT_GOAL = build
 build:
 	dune build @install

ppx_protocol_conv.opam

@@ -1,11 +1,12 @@
 opam-version: "2.0"
 maintainer: "Anders Fugmann <anders@fugmann.net>"
 authors: "Anders Fugmann"
+license: "BSD-3-Clause"
 homepage: "https://github.com/andersfugmann/ppx_protocol_conv"
 dev-repo: "git+https://github.com/andersfugmann/ppx_protocol_conv"
 bug-reports: "https://github.com/andersfugmann/ppx_protocol_conv/issues"
 build: [
-  ["dune" "subst"] {pinned}
+  ["dune" "subst"] {dev}
   ["dune" "build" "-p" name "-j" jobs]
   ["dune" "runtest" "-p" name "-j" jobs] {with-test}
 ]

ppx_protocol_conv_json.opam

@@ -1,11 +1,12 @@
 opam-version: "2.0"
 maintainer: "Anders Fugmann <anders@fugmann.net>"
 authors: "Anders Fugmann"
+license: "BSD-3-Clause"
 homepage: "https://github.com/andersfugmann/ppx_protocol_conv"
 dev-repo: "git+https://github.com/andersfugmann/ppx_protocol_conv"
 bug-reports: "https://github.com/andersfugmann/ppx_protocol_conv/issues"
 build: [
-  ["dune" "subst"] {pinned}
+  ["dune" "subst"] {dev}
   ["dune" "build" "-p" name "-j" jobs]
   ["dune" "runtest" "-p" name "-j" jobs] {with-test}
 ]

ppx_protocol_conv_jsonm.opam

@@ -1,11 +1,12 @@
 opam-version: "2.0"
 maintainer: "Anders Fugmann <anders@fugmann.net>"
 authors: "Anders Fugmann"
+license: "BSD-3-Clause"
 homepage: "https://github.com/andersfugmann/ppx_protocol_conv"
 dev-repo: "git+https://github.com/andersfugmann/ppx_protocol_conv"
 bug-reports: "https://github.com/andersfugmann/ppx_protocol_conv/issues"
 build: [
-  ["dune" "subst"] {pinned}
+  ["dune" "subst"] {dev}
   ["dune" "build" "-p" name "-j" jobs]
   ["dune" "runtest" "-p" name "-j" jobs] {with-test}
 ]

ppx_protocol_conv_msgpack.opam

@@ -1,18 +1,19 @@
 opam-version: "2.0"
 maintainer: "Anders Fugmann <anders@fugmann.net>"
 authors: "Anders Fugmann"
+license: "BSD-3-Clause"
 homepage: "https://github.com/andersfugmann/ppx_protocol_conv"
 dev-repo: "git+https://github.com/andersfugmann/ppx_protocol_conv"
 bug-reports: "https://github.com/andersfugmann/ppx_protocol_conv/issues"
 build: [
-  ["dune" "subst"] {pinned}
+  ["dune" "subst"] {dev}
   ["dune" "build" "-p" name "-j" jobs]
   ["dune" "runtest" "-p" name "-j" jobs] {with-test}
 ]
 depends: [
   "ocaml" {>= "4.04.0"}
   "ppx_protocol_conv" {= version}
-  "msgpck"
+  "msgpck" {>= "1.3"}
   "msgpck" {with-test & >= "1.7"}
   "dune" {>= "1.2"}
   "ppx_sexp_conv" {with-test}

ppx_protocol_conv_xml_light.opam

@@ -1,11 +1,12 @@
 opam-version: "2.0"
 maintainer: "Anders Fugmann <anders@fugmann.net>"
 authors: "Anders Fugmann"
+license: "BSD-3-Clause"
 homepage: "https://github.com/andersfugmann/ppx_protocol_conv"
 dev-repo: "git+https://github.com/andersfugmann/ppx_protocol_conv"
 bug-reports: "https://github.com/andersfugmann/ppx_protocol_conv/issues"
 build: [
-  ["dune" "subst"] {pinned}
+  ["dune" "subst"] {dev}
   ["dune" "build" "-p" name "-j" jobs]
   ["dune" "runtest" "-p" name "-j" jobs] {with-test}
 ]

ppx_protocol_conv_xmlm.opam

@@ -1,11 +1,12 @@
 opam-version: "2.0"
 maintainer: "Anders Fugmann <anders@fugmann.net>"
 authors: ["Anders Fugmann <anders@fugmann.net>" "Nick Betteridge <lists.nick.betteridge@gmail.com"]
+license: "BSD-3-Clause"
 homepage: "https://github.com/andersfugmann/ppx_protocol_conv"
 dev-repo: "git+https://github.com/andersfugmann/ppx_protocol_conv"
 bug-reports: "https://github.com/andersfugmann/ppx_protocol_conv/issues"
 build: [
-  ["dune" "subst"] {pinned}
+  ["dune" "subst"] {dev}
   ["dune" "build" "-p" name "-j" jobs]
   ["dune" "runtest" "-p" name "-j" jobs] {with-test}
 ]

ppx_protocol_conv_yaml.opam

@@ -1,11 +1,12 @@
 opam-version: "2.0"
 maintainer: "Anders Fugmann <anders@fugmann.net>"
 authors: "Anders Fugmann"
+license: "BSD-3-Clause"
 homepage: "https://github.com/andersfugmann/ppx_protocol_conv"
 dev-repo: "git+https://github.com/andersfugmann/ppx_protocol_conv"
 bug-reports: "https://github.com/andersfugmann/ppx_protocol_conv/issues"
 build: [
-  ["dune" "subst"] {pinned}
+  ["dune" "subst"] {dev}
   ["dune" "build" "-p" name "-j" jobs]
   ["dune" "runtest" "-p" name "-j" jobs] {with-test}
 ]