Implement async iterator

[fabiancook]

🚀 Feature Proposal

A clear and concise description of what the feature is.

Motivation

To allow native for await usage

Example

const navigations = appHistory
  .filter(isNavigateEvent)
  .map(e => e.destination.url)

for await (const url of navigations) {
  console.log({ url }); 
}

[fabiancook]

Out of scope