report

Your ex_simple_sum.py example results:
```
0.005 1249975000
0.008 1249975000
0.106 0
0.104 1249975000
0.011 1249975000
0.830 2499950000
```
The third one output wrong answer
```
pool = fastthreadpool.Pool()
pool.map(worker, data)
pool.shutdown()
result = sum(pool.done)
```

And the 4th is not faster than the 5th ThreadPool.