square/okhttp — pull request #764 by adriancole (2014-04-25 16:38:33+00:00)
Title: Merge Job into Call. CallTest = AsyncApiTest + SyncApiTest

One call to rule them all.

```java
Call call = client.newCall(request);
call.execute(callback); // async and cancellable
// or (exclusive)
response = call.execute(); // not cancellable
```