switch to submodule

package.json

@@ -1,14 +1,13 @@
 {
   "name": "milsko",
   "version": "1.0.1",
+  "upstream": "v1.0a",
   "description": "Lightweight and cross-platform native GUI toolkit",
   "main": "lib/index.js",
   "type": "module",
-  "upstream": "v1.0a",
   "scripts": {
+    "install": "node-gyp-build",
     "bindgen": "node scripts/bindgen.js && prettier --write lib/",
-    "download": "node scripts/download.js",
-    "install": "node scripts/install.js",
     "update": "rimraf deps/milsko.tar.gz deps/milsko/ && node scripts/download.js"
   },
   "repository": {
@@ -42,8 +41,7 @@
   },
   "dependencies": {
     "node-addon-api": "^8.7.0",
-    "node-gyp-build": "^4.8.4",
-    "tar": "^7.5.13"
+    "node-gyp-build": "^4.8.4"
   },
   "files": [
     "README.md",