v1.18.0
Solve lib lint failure Summary: This diff solves `pod lib lint` failure. We want to make a new yoga release, as I landed some changes in its podspec which solves the broken flipper build for xcode 11. {F221612119} Reviewed By: passy Differential Revision: D18382588 fbshipit-source-id: efddfa3e93ca59b79b887d04f83407b004d9a199