Use rollup instead of webpack for the full build

package.json

@@ -18,7 +18,7 @@
     "build-examples": "webpack --config examples/webpack/config.js --env=prod",
     "build-index": "node tasks/generate-index",
     "prebuild": "npm run build-index",
-    "build": "webpack --config config/webpack.js",
+    "build": "rollup --config config/rollup.js",
     "presrc-closure": "npm run prebuild",
     "src-closure": "node tasks/transform-types",
     "pretypecheck": "npm run src-closure",
@@ -76,6 +76,12 @@
     "pixelmatch": "^4.0.2",
     "proj4": "2.4.4",
     "recast": "0.14.7",
+    "rollup": "0.59.4",
+    "rollup-plugin-buble": "0.19.2",
+    "rollup-plugin-commonjs": "9.1.3",
+    "rollup-plugin-node-resolve": "3.3.0",
+    "rollup-plugin-sourcemaps": "0.4.2",
+    "rollup-plugin-uglify": "4.0.0",
     "serve": "^7.0.0",
     "sinon": "^5.0.1",
     "url-polyfill": "^1.0.13",