[Feature Request] Make isExpanded apply to root

[bezko]

Is there a way to overide this behaviour, I guess it makes sens for most use case but for documents that have a lot of top level elements it would be nice to have the whole thing collapsed as an option.

react-json-inspector/lib/leaf.js

Line 189 in 34ca624

if (p.root) {

[keithkml]

Yep this was not the behavior I expected and I wasted some time trying to get it to hide the root on load.