opam lint

opam

@@ -1,11 +1,11 @@
 opam-version: "1.2"
 name: "haxe"
 version: "3.4.4"
-maintainer: "Haxe Foundation"
-author: "Haxe Foundation"
+maintainer: ["Haxe Foundation <[email protected]>" "Andy Li <[email protected]>"]
+author: "Haxe Foundation <[email protected]>"
 homepage: "https://haxe.org/"
 bug-reports: "https://github.com/HaxeFoundation/haxe/issues"
-license: "GPL2+ MIT"
+license: ["GPL2+" "MIT"]
 dev-repo: "https://github.com/HaxeFoundation/haxe"
 build: [
   [make]
@@ -21,4 +21,4 @@ depends: [
   "rope"      {build}
   "ptmap"     {build}
 ]
-available: [ ocaml-version { > "4.02" & < "4.06"} ]
+available: [ ocaml-version > "4.02" & ocaml-version < "4.06" ]