Add experimental :boost option to predictions_for.
Support custom weights for the :boost option.
Move comment.
WIP: Associative recommendations.
Make sure different recommenders have different namespaces by default.
Merge branch 'separate-recommender-keyspaces' into prediction-boost
Finish support for associative recommendations.
Merge branch 'key-namespace-flexibility' into prediction-boost

Conflicts:
	lib/predictor/base.rb
	spec/base_spec.rb
	spec/spec_helper.rb
Merge branch 'key-namespace-flexibility' into prediction-boost

Conflicts:
	lib/predictor/base.rb
Drop associative recommendations. Multiple revert of 507d4b2 and 3d2bfe0.

Conflicts:
	lib/predictor/base.rb
Have predictions_for support the :boost option even when there's no item_set.
Add the predictions_for :boost option to the readme.
Add changelog entry for the :boost option.
Oops - make sure weights are actually being passed to Redis.
Merge pull request #14 from Pathgather/prediction-boost

Associative recommendations