Summary: While building some views with YogaKit, I found an interesting problem. If you are apply `yg_` properties to a view which is constructed of subclassed views (that don't use Yoga.) we still treat view (and it's subviews) like they are using YogaKit. This fixes that behavior.
Reviewed By: emilsjolander
Differential Revision: D4348344
fbshipit-source-id: 37b8648918529f55afea1d1883a03af398aac849
Summary: This renames the core C api to use the new Yoga branding.
Differential Revision: D4259190
fbshipit-source-id: 26c8b356ca464d4304f5f9dc4192bff10cea2dc9