Lint actual artifacts to publish, fail to publish if they don't lint, use twince check instead of deprecated readme package.

So it turns out nose.tools.timed doesn't actually kill functions on timeout. Create a new decorator that actually does using the stopit library. Add decorator to another function that appears to hang under Python 3.4 sometimes.

Finally, under Python 3.4 on Traivs print the functions running so we can see hung entries.

Finally includes testing against actual Galaxy master branch.

 - pass through drmaa environment variable (needs to be explicit as 2.0)
 - reduce duplication slightly

 - Allow tests to fail on Traivs.
 - Add new environment that just runs the unit tests that does not fail though.

 - Depend on galaxy-lib.
 - Move things into pulsar.util and/or pulsar.client.util as makes sense.
 - Use more Galaxy idioms.