Ad-sdl.wei

Many changes.
We now have a redis server for the wei-worker
we also have an experiment class to capture high and low level events on the experiment.

This is the first official release of WEI!!!

What's Changed
* Support named locations (compatible with numbered locations); by legendPerceptor in https://github.com/AD-SDL/rpl_wei/pull/8
* Resolve ot2 config files as dicts by KPHippe in https://github.com/AD-SDL/rpl_wei/pull/9
* Changes to get demo to work on parker, cleaned up now by KPHippe in https://github.com/AD-SDL/rpl_wei/pull/10
* Starting infrastructure for parameterizing runs via payloads by KPHippe in https://github.com/AD-SDL/rpl_wei/pull/11
* Payload injection and more generalized location injection by KPHippe in https://github.com/AD-SDL/rpl_wei/pull/12
* Patch/refactor wei by ravescovi in https://github.com/AD-SDL/rpl_wei/pull/13
* Patch/refactor wei by KPHippe in https://github.com/AD-SDL/rpl_wei/pull/15

**Full Changelog**: https://github.com/AD-SDL/rpl_wei/commits/v0.1