Add 0.4.2 changelog

[gaearon]

0.4.2 (September 18, 2016)

Build Dependency (react-scripts)

• Lint output in editor is now opt-in because, due to this ESLint issue, it is broken by default in Atom. (@fson in #649)
• Fixes an issue causing compile errors when project folder is inside a symlink. (@motiz88 in #648)
• You can now import jpeg, wav, mp3, m4a, aac, and oga. (@mareksuscak in #624, @danharper in #665)
• Fixes false positives caused by the case sensitive import warning on Windows. (@Urthen in #593)
• With Docker, *.json.gzip files are no longer created in the project folder. (@thangngoc89 in #620)
• Proxy network errors now abort requests instead of hanging. (@cloudmu in #588)
• Connection to the development server does not get interrupted in HTTPS mode. (@dceddia in #652)
• Unsupported Node versions now print a warning. (@fson in #575)
• Importing assets with special characters like @ now works with tests. (@fson in #584)
• Undefined variable lint rule is promoted from a warning to an error. (@gaearon in #669)
• Variables starting with underscore no longer trigger the “unused variable” rule. (@valscion in #640)
• We now print a friendly error when required files are missing. (@vnctaing in #653)
• The output after creating a project is better formatted. (@btnwtn in #629)
• Development server logs are less noisy. (@gaearon in 122068)

Global CLI (create-react-app)

• It now runs on early Node versions to print a friendly warning instead of crashing. (@sotojuan in fc3ab4)
• We now print a friendly message when you create a project with invalid name. (@mareksuscak in #628)
• Passing a custom fork of react-scripts to create-react-app with --scripts-version works again. (@yesmeck in #632)

Migrating from 0.4.1 to 0.4.2

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

npm install -g create-react-app@0.4.2

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

npm install --save-dev --save-exact react-scripts@0.4.2