Pyres

* bug fix for pruning workers.

* delayed tasks
* resweb pagination
* switch stored timestamps to a unix timestamp
* updated documentation
* upgraded to redis-py 1.34.1
* switched from print statements to the logging module
* import errors on jobs are now reported in the failed queue
* prune dead workers
* small bugfixes in the resweb package
* improved failure formatting
* datetime json parser

* added new documentation to the project
* update setup.py
* preparing for semantic versioning

* fixed issue with new failure package in distutils sdist
* changed setup.py to remove camel case, because it's ugly

* added the basics of failure backend support

* minor bug fix in worker.py
* merged in some setup.py niceties from dsc fork
* merged in better README info from dsc fork