Indexedredis

- Implement getPrimaryKeys (get primary keys at current filter level).
Takes optional argument to sort by age
- Implement first/last/random for getting oldest/newest/random record
- Update documentation a bit

- Allow deleting directly from a filter object
(SomeModel.objects.filter(...).delete)

- Much better handle unicode in Python 2
- allow changing encoding via a setEncoding function at the global
IndexedRedis level

- fix typos
- fix deleteMultiple

- Add support for __ne (not equals) filtering
- Make filters default to be copies instead of operating on self, which allows them to be passed to functions but retain original value. Old behaviour can be retained doing .filterInline
- Enhance example with more features
- Add some docstrings
- Fix example where __init__ did not pass args and kwargs to parent and thus broke delete
- add asDict method for representation as a dictionary
- Change example to use asDict to not print original data
- Move module to a standard package setup