Don't hard code React version anywhere
Merge remote-tracking branch 'upstream/docs-refactor' into HEAD
Cleanup "Displaying Data"
Cleanup "JSX in Depth"
Cleanup "JSX Gotchas"
Cleanup "Interactivity and Dynamic UIs"
Cleanup "Multiple Components"
Cleanup "Reusable Components"
Cleanup "Forms"
Cleanup "Working With the Browser"
Cleanup "More About Refs"
Cleanup "Tooling Integration"
Cleanup "Reference"

(unlinked likebutton tutorial - not updated enough for public)
Standardized Markdown lists
em dashes