feat: Add support for version 3.1.2 (#279)

Author: baywet

lib/index.js

@@ -11,7 +11,7 @@ const util = require("./util");
 const Options = require("./options");
 const maybe = require("call-me-maybe");
 
-const supported31Versions = ["3.1.0", "3.1.1"];
+const supported31Versions = ["3.1.0", "3.1.1", "3.1.2"];
 const supported30Versions = ["3.0.0", "3.0.1", "3.0.2", "3.0.3", "3.0.4"];
 const supportedVersions = [...supported31Versions, ...supported30Versions];