add util and helper to keywords

zardoy · greggman · commit 42291da89afb · 2021-03-07T09:54:38.000+09:00
diff --git a/package.json b/package.json
@@ -26,7 +26,9 @@
   },
   "keywords": [
     "WebGL",
-    "twgl"
+    "twgl",
+    "util",
+    "helper"
   ],
   "author": "Greggman",
   "license": "MIT",
