stomp.py==4.0.2
six

# Use master until they release a new version
-e git+https://github.com/jasonrbriggs/stomp.py.git#egg=stomp.py
six

Use stomp.py from source code
Use stomp.py from source code

Current code base doesn't work with current stomp.py version (4.0.7),
however the fix for it doesn't work because of a bug on that version,
fixed in their master branch.

Since my fix is backwards compatible (and I hope forwards too), just use
their master branch until they released a new version with master code.
