refactor: Apply webpack-defaults & webpack 3.x support (#540)

- refactor: Pass a unique compiler name to get child compilation [483](#483)
- refactor: Apply webpack-defaults [542](#542)

BREAKING CHANGE: Enforces `engines` of `"node": ">=4.3.0 < 5.0.0 || >= 5.10`

- refactor: DeprecationWarning: Chunk.modules [543](#543)

BREAKING CHANGE: Updates to `Chunk.mapModules`. This release is not backwards compatible with `Webpack 2.x` due to breaking changes in webpack/webpack#4764

- fix: css generation order issue see: webpack/webpack#5225

BREAKING CHANGE: Enforces `peerDependencies` of `"webpack": "^3.1.0"`.

Author: joshwiens

.babelrc

@@ -0,0 +1,36 @@
+{
+  "presets": [
+    [
+      "env",
+      {
+        "useBuiltIns": true,
+        "targets": {
+          "node": "4.3"
+        },
+        "exclude": [
+          "transform-async-to-generator",
+          "transform-regenerator"
+        ]
+      }
+    ]
+  ],
+  "plugins": [
+    [
+      "transform-object-rest-spread",
+      {
+        "useBuiltIns": true
+      }
+    ]
+  ],
+  "env": {
+    "test": {
+      "presets": [
+        "env"
+      ],
+      "sourceMap" : "inline",
+      "plugins": [
+        "transform-object-rest-spread"
+      ]
+    }
+  }
+}

.editorconfig

@@ -1,17 +1,18 @@
-# EditorConfig is awesome: http://EditorConfig.org
-
-# top-most EditorConfig file
+# editorconfig.org
 root = true
 
-# Unix-style newlines with a newline ending every file
 [*]
 charset = utf-8
+indent_style = space
+indent_size = 2
 end_of_line = lf
 insert_final_newline = true
-indent_style = tab
-indent_size = 4
+trim_trailing_whitespace = true
 
-# Matches the exact files either package.json or .travis.yml
 [{package.json,.travis.yml}]
 indent_style = space
 indent_size = 2
+
+[.md]
+insert_final_newline = false
+trim_trailing_whitespace = false