chore(package): update rimraf to version 3.0.2

Closes #25

Author: greenkeeper[bot]

package.json

@@ -32,7 +32,7 @@
     "esm": "3.2.25",
     "microbundle": "0.11.0",
     "prettier": "1.18.2",
-    "rimraf": "2.6.3",
+    "rimraf": "3.0.2",
     "rxjs": "6.5.2"
   }
 }