About the version of react

[yinshangwei]

In dependencies, the version of react is "15.4.0". Now I'm using react 15.3.2, so when I do yarn install this package, there is a warning incorrect peer dependency "react@>=15.4.0". But I find it can still work in react 15.3.2 even there is a warning. I want to know why you set the version of react to "15.4.0". And I wonder if you could downgrade the react version to the lowest one, since the low version(al least 15.3.2) can still work well.