upgrade dependencies

Author: clarketm

package.json

@@ -58,15 +58,16 @@
     "jquery": ">= 1.1.2"
   },
   "devDependencies": {
-    "@babel/core": "^7.1.2",
-    "@babel/preset-env": "^7.1.0",
-    "@types/node": "^10.11.5",
+    "@babel/core": "^7.6.2",
+    "@babel/preset-env": "^7.6.2",
+    "@types/node": "^12.7.8",
     "colors": "^1.3.2",
     "prettier": "^1.14.3",
-    "rollup": "^0.66.4",
-    "rollup-plugin-babel": "^4.0.3",
-    "rollup-plugin-commonjs": "^9.1.8",
-    "rollup-plugin-json": "^3.1.0",
+    "rollup": "^1.21.4",
+    "rollup-plugin-babel": "^4.3.3",
+    "rollup-plugin-commonjs": "^10.1.0",
+    "rollup-plugin-json": "^4.0.0",
+    "rollup-plugin-node-resolve": "^5.2.0",
     "rollup-plugin-strip-banner": "^0.2.0",
     "shx": "^0.3.2",
     "uglify-js": "2.8.11",