tarantool/queue — pull request #4 by rybakit (2014-06-10 11:16:31+00:00)
Title: Allow to return immediatly from queue.take() if there are no ready tasks

```
queue.take(0, 'q') -- waits indefinitely
queue.take(0, 'q', -1) -- waits indefinitely
queue.take(0, 'q', 0) -- returns immediately
queue.take(0, 'q', 1) -- waits 1 second and returns
```