modified:   setup.py
added distributes 2to3 option for python3 compatibility
fixed inconsistent line indents. converted everything to spaces only
use 2to3 only for python
got rid of warning thrown by 2to3 conversion
fixed more indent errors in iron_worker.py
updates test (tasks cancellation)
bumps version
updates python 3 support; bumps version
Merge pull request #27 from featalion/test_python_3_support

Python v3 support