chore(deps): update dependency rollup to v0.63.4 (#33)

Author: renovate[bot]

package.json

@@ -49,7 +49,7 @@
     "prettier-package-json": "1.6.0",
     "puppeteer": "1.6.0",
     "rimraf": "2.6.2",
-    "rollup": "0.63.3",
+    "rollup": "0.63.4",
     "rollup-plugin-babel": "4.0.0-beta.7",
     "rollup-plugin-commonjs": "9.1.3",
     "rollup-plugin-node-resolve": "3.3.0",

yarn.lock

@@ -4829,9 +4829,9 @@ rollup-pluginutils@^2.0.1, rollup-pluginutils@^2.3.0:
     estree-walker "^0.5.2"
     micromatch "^2.3.11"
 
-rollup@0.63.3:
-  version "0.63.3"
-  resolved "https://registry.yarnpkg.com/rollup/-/rollup-0.63.3.tgz#a242293c23c9ecb24e976816d590d69a36fe9376"
+rollup@0.63.4:
+  version "0.63.4"
+  resolved "https://registry.yarnpkg.com/rollup/-/rollup-0.63.4.tgz#cb58bf6c2a6c38542cae250684c962799ad7c00c"
   dependencies:
     "@types/estree" "0.0.39"
     "@types/node" "*"