Add 0.3.0 changelog

[gaearon]

0.3.0 (September 1, 2016)

Build Dependency (react-scripts)

• Testing is now supported! (Jest project contributors, @cpojer in #250, @gaearon in #378, #530, #533)
• Static files such as CSS, images, and fonts, can now exist outside src directory. (@fson in #504)
• Local paths in <link href> in index.html will now be correctly resolved, so deleting favicon.ico is not an error anymore. (@andreypopp in #428)
• Removed an annoying lint rule that warned for <div ref={node => this.node = node}>. (@mrscobbler in #529)
• Temporarily disabled react-constant-elements Babel transform because of its bugs. (@gaearon in #534)
• Fixed a permission issue with Docker. (@gaearon in 73c940)
• Fixed an issue with generator syntax in Jest that occurred in an alpha release. (@gaearon in #535)

Global CLI (create-react-app)

• You can now create a project in a folder that already contains an .idea folder, which is necessary for future WebStorm integration. (@denofevil in #522)

Migrating from 0.2.3 to 0.3.0

You may optionally update the global command (it’s not required):

npm install -g [email protected]

Inside any created project that has not been ejected, run:

npm install --save-dev --save-exact [email protected]

Since 0.3.0 added a test runner, we recommend that you add it to the scripts section of your package.json like this:

  // ...
  "scripts": {
    // ...
    "test": "react-scripts test --env=jsdom"
  }

Then read the testing guide to learn more about using it!