upgrade opam to 2.0

opam

@@ -1,15 +1,20 @@
-opam-version: "1.2"
+opam-version: "2.0"
 maintainer: "[email protected]"
 authors: ["ygrek"]
 homepage: "http://ygrek.org.ua/p/sqlgg/"
-dev-repo: "https://github.com/ygrek/sqlgg.git"
+dev-repo: "git+https://github.com/ygrek/sqlgg.git"
 bug-reports: "https://github.com/ygrek/sqlgg/issues"
 build: [
-  ["ocaml" "setup.ml" "-configure" "--enable-tests" "--%{mysql:enable}%-mysql" "--%{sqlite3:enable}%-sqlite3" "--prefix" prefix]
+  [ "ocaml"
+    "setup.ml"
+    "-configure"
+    "--enable-tests"
+    "--%{mysql:enable}%-mysql"
+    "--%{sqlite3:enable}%-sqlite3"
+    "--prefix" prefix
+  ]
   ["ocaml" "setup.ml" "-build"]
-]
-build-test: [
-  ["ocaml" "setup.ml" "-test"]
+  ["ocaml" "setup.ml" "-test"] {with-test}
 ]
 install: [
   ["ocaml" "setup.ml" "-install"]
@@ -19,6 +24,7 @@ remove: [
   ["rm" "-f" "%{bin}%/sqlgg" "%{bin}%/sqlgg.exe"]
 ]
 depends: [
+  "ocaml" {>= "4.02.0"}
   "ocamlfind" {build}
   "ocamlbuild" {build}
   "mybuild" {build}
@@ -32,4 +38,11 @@ depopts: [
   "mysql"
   "sqlite3"
 ]
-available: [ocaml-version >= "4.02.0"]
+synopsis: "SQL Guided (code) Generator"
+description: """
+sqlgg is an SQL query parser and binding code generator for C#, C++, Java, OCaml.
+It starts off with SQL schema and queries, and generates code (or XML, allowing
+further code generation for various purposes). Generated code only defines a mapping
+of output columns and query parameters to the host language, trying to be as unobtrusive
+as possible and leaving the choice of SQL database (and API to access it) to the developer."""
+flags: light-uninstall