wrench: Switched to rollup as bundler

packages/models/rollup.js

@@ -0,0 +1,23 @@
+import { terser } from "rollup-plugin-terser";
+import babel from "rollup-plugin-babel";
+import resolve from "rollup-plugin-node-resolve";
+import json from "rollup-plugin-json";
+import { version, name, description, author, license } from "./package.json";
+
+export default {
+  input: "src/index.js",
+  plugins: [
+    resolve({
+      browser: true
+    }),
+    json(),
+    babel({
+      exclude: "node_modules/**"
+    }),
+    terser({
+      output: {
+        preamble: `/**\n * ${name} | v${version}\n * ${description}\n * (c) ${new Date().getFullYear()} ${author}\n * @license ${license}\n */`
+      }
+    })
+  ]
+};