feat: use shallow-equal over fbjs

[eps1lon]

Replaces fbjs/lib/shallowEqual with shallow-equal#shallowEqualObjects.
fbjs is not intended for usage outside of facebook and pulls in outdated dependencies (e.g. isomorphic-fetch).

It doesn't use same-value equality as of yet (proposed in moroshko/shallow-equal#17) but it seems like this isn't an issue here since we control what kind of values we compare.

[oliviertassinari]

I remember a couple of back and forth on this problem two years ago. I think fbjs was used at some point to use the same dependency as React. It's probably no longer used :)

[eps1lon]

I remember a couple of back and forth on this problem two years ago. I think fbjs was used at some point to use the same dependency as React. It's probably no longer used :)

They dropped it in 16.5: facebook/react@8e87c13

[oliviertassinari]

👌

[oliviertassinari]

Released