Big various updates

[marcofugaro]

New features

• possibility to edit the babel configuration via the .babelrc
• babel-plugin-macros, pipeline-operator, optional-chaining, optional-catch-binding and many other from babel7
• transpilation of the node_modules
• new Eslint rules (already published)
• possiblity to edit the supported browsers both in development and in production via browserslist in package.json. Both babel-preset-env and autoprefixer depend on it.
• CSV Loader
• CSS Modules for *.module.css files
• Support for FUSS
• CSS Nesting
• JSON5 Loader
• support for the .env file
• A lot of documentation, including:
  • Netlify setup guide and config file
  • Adding new webpack loaders and plugins
  • Adding support for typescript
  • Available Env variables
  • How do I enable hot reloading?
  • Where do I put the images?
  • Where do I put the custom fonts?
  • What is the public folder for?
  • How do I override a webpack loader?
• Fix forever the PUBLIC_URL env
• Add the LATEST_COMMIT and LATEST_COMMIT_TIMESTAMP env variables
• Add support for color-mod() in css using postcss
• Lint command
• Prettier command
• Styles are now imported from the avoiding the FOUC
• SVG React Loader

Refactoring

• Updated the create-test-app command according to the new yarn version
• Updated lerna and the publish command
• remove BSD oudated license
• add short README in every package
• updated the start and build node scripts according to the updates in create-react-app
• upgrade deps to webpack4, babel7, eslint5
• deprecated setting the NODE_ENV from the outside, other other variables instead
• updated the webpack.config

Closes #15
Closes #18
Closes #19
Closes #22
Closes #23
Closes #24
Closes #30
Closes #32
Closes #33
Closes #36

[marcofugaro]

good job @marcofugaro 🎉