v19.0.0
[flow] Eliminate usage of more than 1-arg `React.AbstractComponent` in React codebase (#31314)
Add details in READMEs for react-devtools local developement (#24148)
chore[devtools]: upgrade to webpack v5 (#26887)
DevTools] e2e Regression Testing App (#24619)
Refactored DevTools test shell for e2e (#22968)
[DevTools] add perf regression test page in shell (#25078)
DevTools: Support mulitple DevTools instances per page (#22949)
chore[react-devtools]: unify console patching and default to ansi escape symbols (#29869)