refactor: apply webpack-defaults (#54)

- refactor: Apply webpack-defaults 
- refactor: Removes Zopfli option, which has been extracted to it's own plugin.

BREAKING CHANGE: Enforces `peerDependencies` of `"webpack": ">= 3.0.0-rc.0 || ^3.0.0"`. 

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

BREAKING CHANGE: Remove loose dependency on Node Zopfli, which has been extracted to it's own plugin https://github.com/webpack-contrib/zopfli-webpack-plugin

Migration: 

- `npm i -D zopfli-webpack-plugin`
- The Zopfli API has remained the same, those who were using the Zopfli option in this plugin should just need to switch plugins.

.babelrc

@@ -0,0 +1,35 @@
+{
+  "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"
+      ],
+      "plugins": [
+        "transform-object-rest-spread"
+      ]
+    }
+  }
+}

.editorconfig

@@ -0,0 +1,13 @@
+# editorconfig.org
+
+[*]
+charset = utf-8
+indent_style = space
+indent_size = 2
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[.md]
+insert_final_newline = false
+trim_trailing_whitespace = false

.eslintignore

@@ -0,0 +1,2 @@
+/node_modules
+/dist

.eslintrc

@@ -0,0 +1,10 @@
+{
+  "extends": "webpack",
+  "rules": {
+    "consistent-return": 1,
+    "global-require": 1,
+    "no-undef": 1,
+    "no-param-reassign": 1,
+    "import/no-extraneous-dependencies": 1
+  }
+}

.gitattributes

@@ -1 +1,5 @@
 * text=auto
+
+yarn.lock -diff
+bin/* eol=lf
+package-lock.json -diff

.github/ISSUE_TEMPLATE.md

@@ -0,0 +1,7 @@
+<!--
+1. Check the version of package you are using. If it's not the newest version, update and try again (see changelog while updating!).
+2. If the issue is still there, write a minimal project showing the problem and expected output.
+3. Link to the project and mention Node version and OS in your report.
+
+**IMPORTANT! You should use [Stack Overflow](https://stackoverflow.com/) for support related questions.**
+-->

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,5 @@
+<!--
+1. [Read and sign the CLA](https://cla.js.foundation/webpack/webpack.js.org). This needs to be done only once. PRs that haven't signed it won't be accepted.
+2. Check out the [development guide](https://webpack.js.org/development/) for the API and development guidelines.
+3. Read through the PR diff carefully as sometimes this can reveal issues. The work will be reviewed, but this can save some effort.
+-->

.gitignore

@@ -1 +1,17 @@
 /node_modules
+
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+.eslintcache
+/coverage
+/dist
+/local
+/reports
+.DS_Store
+Thumbs.db
+.idea
+.vscode
+*.sublime-project
+*.sublime-workspace

.travis.yml

@@ -0,0 +1,48 @@
+sudo: false
+dist: trusty
+language: node_js
+branches:
+  only:
+    - master
+jobs:
+  fast_finish: true
+  allow_failures:
+    - env: WEBPACK_VERSION=canary
+  include:
+    - &test-latest
+      stage: Webpack latest
+      nodejs: 6
+      env: WEBPACK_VERSION=latest JOB_PART=test
+      script: npm run travis:$JOB_PART
+    - <<: *test-latest
+      nodejs: 4.3
+      env: WEBPACK_VERSION=latest JOB_PART=test
+      script: npm run travis:$JOB_PART
+    - <<: *test-latest
+      node_js: 8
+      env: WEBPACK_VERSION=latest JOB_PART=lint
+      script: npm run travis:$JOB_PART
+    - <<: *test-latest
+      node_js: 8
+      env: WEBPACK_VERSION=latest JOB_PART=coverage
+      script: npm run travis:$JOB_PART
+      after_success: 'bash <(curl -s https://codecov.io/bash)'
+    - stage: Webpack canary
+      before_script: npm i --no-save git://github.com/webpack/webpack.git#master
+      script: npm run travis:$JOB_PART
+      node_js: 8
+      env: WEBPACK_VERSION=canary JOB_PART=test
+before_install:
+  - 'if [[ `npm -v` != 5* ]]; then npm i -g npm@^5.0.0; fi'
+  - nvm --version
+  - node --version
+  - npm --version
+before_script:
+  - |-
+    if [ "$WEBPACK_VERSION" ]; then
+      npm i --no-save webpack@$WEBPACK_VERSION
+    fi
+script:
+  - 'npm run travis:$JOB_PART'
+after_success:
+  - 'bash <(curl -s https://codecov.io/bash)'

LICENSE

@@ -1,4 +1,3 @@
-
 Copyright JS Foundation and other contributors
 
 Permission is hereby granted, free of charge, to any person obtaining

appveyor.yml

@@ -0,0 +1,28 @@
+branches:
+  only:
+    - master
+init:
+  - git config --global core.autocrlf input
+environment:
+  matrix:
+    - nodejs_version: '8'
+      webpack_version: latest
+      job_part: test
+    - nodejs_version: '6'
+      webpack_version: latest
+      job_part: test
+    - nodejs_version: '4.3'
+      webpack_version: latest
+      job_part: test
+build: 'off'
+matrix:
+  fast_finish: true
+install:
+  - ps: Install-Product node $env:nodejs_version x64
+  - npm install
+before_test:
+  - cmd: npm install webpack@%webpack_version%
+test_script:
+  - node --version
+  - npm --version
+  - cmd: npm run appveyor:%job_part%