Add July, 21 notes

2016-07/july-21.md

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+## July 21 ([discuss](https://github.com/reactjs/core-notes/pull/24))
+
+### Attendees
+
+* [Ben](https://twitter.com/soprano) (React)
+* [Christopher](https://twitter.com/vjeux) (React)
+* [Dan](https://twitter.com/dan_abramov) (React)
+* [Keyan](https://twitter.com/keyanzhang) (React, intern)
+* [Paul](https://twitter.com/zpao) (React)
+* [Sebastian](https://twitter.com/sebmarkbage) (React)
+* [Tom](https://twitter.com/tomocchino) (React)
+
+### Hackathon
+
+* Team members worked on tangential/random projects last week.
+* [Sebastian](https://twitter.com/sebmarkbage) showed a demo of text layout in JS.
+* [Dan](https://twitter.com/dan_abramov) and [Christopher](https://twitter.com/vjeux) introduced [Create React App](https://github.com/facebookincubator/create-react-app).
+
+### Update on `createClass` Codemod
+
+* We are continuing work on moving Facebook.com codebase away from `createClass`.
+* Discovered an issue with automocking of bound functions working differently, fixing the internal tests manually.
+* [`PureComponent`](https://github.com/facebook/react/pull/7195) didn’t quite work in Flow, fixed in [0.30.0](https://github.com/facebook/flow/releases/tag/v0.30.0).
+* Plan to run the [`createClass` codemod](https://github.com/reactjs/react-codemod#class) on Facebook.com codebase this weekend.
+* It touches 1/7 of all files in the Facebook.com JS codebase!
+
+### Introducing [Create React App](https://github.com/facebookincubator/create-react-app)
+
+* Started at a hackathon last week.
+* Ready to release tomorrow with a live stream.
+* Using `import` for CSS is somewhat controversial.
+* [Ben](https://twitter.com/soprano) is concerned that it is non-standard.
+* [Dan](https://twitter.com/dan_abramov) and [Christopher](https://twitter.com/vjeux) think upsides of using one bundler for all assets outweigh the downsides.
+* We’ll add a note to the [howto](https://github.com/facebookincubator/create-react-app/blob/master/template/README.md#adding-a-stylesheet) explaining how this works, and that it is not required for React.
+* We don’t have this problem at Facebook because we have a custom CSS pipeline, but we aren’t entirely happy with it either.
+
+### React Release Manager
+
+* [Paul](https://twitter.com/zpao) is getting close to finishing React Release Manager.
+* The goal is to make it easy for anyone to release a new version of React.
+* It automates all the steps we are doing before every release so React Native folks or community members can cut releases.
+* It has a slick interactive CLI!
+* If you’re curious, there’s a README [here](https://github.com/facebook/react/blob/73f24269493bad75b64e8417675c1d76f6007ef0/scripts/release-manager/Readme.md).
+
+------------
+
+Please feel free to discuss these notes in the [corresponding pull request](https://github.com/reactjs/core-notes/pull/24).