Add support to OCaml 4.14 (#2662)

* copy 412<>413 migrations

* remove gencopy, fails on 4.14

* add support to 4.14 on Reason

* fix Warnings.Bad_docstring

* another fix

* fix a syntax error under 4.03

* run on ubuntu 20.04 in azure

* use Locations.extension_of_error

* another syntax fix for 4.03

* more fixes

* oops

* one more fix i guess

* update esy lockfiles

Co-authored-by: Antonio Nuno Monteiro <[email protected]>

Author: EduardoRFS

azure-pipelines.yml

@@ -35,7 +35,7 @@ stages:
     - template: .ci/build-platform.yml
       parameters:
         platform: Linux
-        vmImage: ubuntu-16.04
+        vmImage: ubuntu-20.04
 
     - template: .ci/build-platform.yml
       parameters:

esy.json

@@ -2,21 +2,19 @@
   "name": "reason-cli",
   "notes": "This is just the dev package config (also built as globally installable reason-cli). See ./refmt.json ./rtop.json for individual release package configs.",
   "license": "MIT",
-  "version": "3.7.0",
+  "version": "3.7.1",
   "dependencies": {
-    "ocaml": " >= 4.2.0 < 4.14.0",
+    "ocaml": " >= 4.2.0 < 4.15.0",
     "@opam/fix": "*",
     "@opam/ocamlfind": "*",
     "@opam/menhir": " >= 20170418.0.0",
     "@opam/utop": " >= 1.17.0",
     "@opam/merlin-extend": " >= 0.6",
     "@opam/result": "*",
-    "@opam/dune": "*",
+    "@opam/dune": "2.9.3",
     "@opam/ppx_derivers": "< 2.0.0"
   },
   "devDependencies": {
-    "@opam/merlin": "*",
-    "@opam/ocaml-lsp-server": "*",
     "@opam/odoc": "*",
     "ocaml": "~4.12.0"
   },