Initial hacks toward reimplementing cache_thing() in Lua
Merge branch 'master' into scripting

Conflicts:
	cacheops/query.py
Merge branch 'master' into scripting

Conflicts:
	cacheops/query.py
Ported cache_thing() to Lua
Merge branch 'master' into scripting

Conflicts:
	cacheops/query.py
Merge branch 'master' into scripting
Rewrite invalidation in Lua
Refactor cache_thing()

- extract lua to external file
- remove debugging output
Add zip_safe parameter to setup
Small refactor in cache thing

- timeout is always non empty
- move comment about invalidator timeout to more appropriate place
Updated README

- require redis 2.6
- remove TODO item
Merge branch 'master' into scripting

Conflicts:
	cacheops/query.py
Updated benchmarks for scripting branch
Support date, datetime and time fields

Also support datetime and time equality filtering.
Removed debug call in invalidate script
Merge branch 'master' into scripting

Conflicts:
	BENCHMARKS
Added six to requirements file.
Merge branch 'scripting'
Updated TODO
Clarified supported Django and Redis versions in README