Merge pull request #58 from haizaar/master

Fixing example to match current Pool API.
Merge pull request #60 from haizaar/master

Volatile db, pool stretching, setsession, getconn/putconn and other goodies.
Merge pull request #65 from haizaar/master

Doc updates towards 1.1.0
Fix formatting in changelog.
Update LICENSE
Update version number is setup.py.