threadpool 1.0.2

A thread pool for running a number of jobs on a fixed set of worker threads.
Documentation
# Changes

## 1.0.2

* [Use atomic counters]https://github.com/frewsxcv/rust-threadpool/pull/25

## 1.0.1

* [Switch active_count from Mutex to RwLock for more performance]https://github.com/frewsxcv/rust-threadpool/pull/23