add release package script

Author: ianmacartney

package.json

@@ -21,6 +21,9 @@
     "build:esm": "tsc --project ./esm.json && echo '{\\n  \"type\": \"module\"\\n}' > dist/esm/package.json",
     "build:cjs": "tsc --project ./commonjs.json && echo '{\\n  \"type\": \"commonjs\"\\n}' > dist/commonjs/package.json",
     "dev": "cd example; npm run dev",
+    "alpha": "rm -rf dist && npm run build && npm run test && npm version prerelease --preid alpha && npm publish --tag alpha && git push --tags",
+    "release": "rm -rf dist && npm run build && npm run test && npm version patch && npm publish && git push --tags",
+    "test": "cd example && npm run lint",
     "typecheck": "tsc --noEmit",
     "prepare": "npm run build"
   },