2.0

• 2.0.0 Dec 31 2015
• Implement interactive non-blocking background writing. This allows you to
  fork writing to files (otherwise a blocking operation) into the background,
  with a configurable I/O priority associated. The lower the priority number, the
  higher the throughput, but the higher that number, the higher interactivity
  (throughput is throttled and other tasks, e.g. cpu-bound calculations, get
  more time and priority. There are heuristics going on here, and the ability to
  chain multiple datasets to the same file, so this is
  more/better than just throwing a thread into the background.
• Split the read portion into read.py and out of init.py
• 1.0.0 Dec 18 2015
• Initial Release, nonblocking read function - nonblock_read