Feature request: Improved warning "Functions are not valid as a React child..."

Good day. Every time when I bump into the following error ``` Warning: Functions are not valid as a React child. This may happen if you return a Component instead of <Component /> from render. Or maybe you meant to call this function rather than return it. ``` it takes me quite some time to locate the bad value in UI structure, even though there's a component trace in the console. What I think would improve by debugging experience if the error would also log the problematic value. This way I could know which value it is exactly in a single click in DevTools.