handle queueMicrotask global added in Node 11
handle queueMicrotask global added in Node 11

queueMicrotask was added with an experimental warning in Node
11. To avoid the warning, which causes many tests to fail,
use the 'in' operator to detect queueMicrotask on the global
object.

lloydbenson/lab,lloydbenson/lab,lloydbenson/lab