Upgrade to Babel 7 (#1595)

* Upgrade to Babel 7

* Update dependencies

* Remove `modules` and `useEsModules` as module support is automatically detected

Target browsers supporting ESM in the ESM build.

* Disable corejs aliasing (polyfill)

* Fix package.json and update lockfile

* Bump CircleCI cache version

* Remove `Object.values()` use for Node 6 compatability

* Remove redundant arguments to @babel/register

* Update rollup and rollup-plugin-babel

* Add ignore option to no-transform-runtime-aliasing

Ignore JSON.stringify, parseInt, and ParseFloat

* Upgrade babel-loader to 8.0.1

* Use api.env() in Babel configuration

* Upgrade babel-loader to 8.0.2

.eslintrc

@@ -82,7 +82,10 @@
         "excludedFiles": ["*-spec.js", "unicodeMake.js"],
         "rules": {
             "no-restricted-syntax": [2, "ForOfStatement", "ClassDeclaration[superClass]", "ClassExpression[superClass]"],
-            "transform-runtime-aliasing/no-transform-runtime-aliasing": 2
+            "transform-runtime-aliasing/no-transform-runtime-aliasing": [2, {
+                "transformEnabled": false,
+                "ignore": ["parseInt", "parseFloat", "JSON.stringify"]
+            }]
         },
         "env": {
             "node": false