Create an async HTTP request solution

[jonalmeida]

makeRequest(HttpGet httpGet) uses CloseableHttpClient to send GET requests.

We can provide an async version of this using CloseableHttpAsyncClient

[alexanderdean]

Good idea

[jonalmeida]

Pushing back to 0.4.0

[jonalmeida]

Fixed in develop.

By default, we always use the synchronous emitter. If you want to use the async version, we have a setter for it: setHttpOption(HttpOption option)

HttpOption is an enum for Synchronous and Asynchronous to let the user switch between the two at an given time.

Side note: The committed code in Emitter can be written better to be a bit more modular. This can be reviewed in a future release.

[alexanderdean]

No problem - let's make a ticket to refactor the Emitter code