Add process for beta release

extra/beta/reset-version.js

@@ -0,0 +1,16 @@
+const pkg = require("../../package.json");
+const fs = require("fs");
+const util = require("../../src/util");
+
+util.polyfill();
+
+const oldVersion = pkg.oldVersion;
+
+if (!oldVersion) {
+    console.log("Error: no old version?");
+    process.exit(1);
+}
+
+delete pkg.oldVersion;
+pkg.version = oldVersion;
+fs.writeFileSync("package.json", JSON.stringify(pkg, null, 4) + "\n");