Delete temp sets after use

Signed-off-by: David Celis <david@davidcelis.com>
Fix a bug where predictions are always 0.0

Signed-off-by: David Celis <david@davidcelis.com>
Bump version to 2.0.1

Signed-off-by: David Celis <david@davidcelis.com>
Update Gemfile.lock

Signed-off-by: David Celis <david@davidcelis.com>
Update CHANGELOG.md
Bundle update

Signed-off-by: David Celis <me@davidcel.is>
Fix incompatibilities with DataMapper and Mongoid

Both DataMapper and Mongoid were attempting to include an undefined
module, Recommendable::Ratable::InstanceMethods. I had forgotten to add
this after seeing warnings from ActiveSupport::Concern that
InstanceMethods modules would no longer be included automatically.
Mongoid and DataMapper need explicit includes, however, so those modules
will be defined inline for them.

Fixes #58

Signed-off-by: David Celis <me@davidcel.is>
Bump version to 2.0.2

Signed-off-by: David Celis <me@davidcel.is>
Update Gemfile.lock

Signed-off-by: David Celis <me@davidcel.is>
Sign future releases

Signed-off-by: David Celis <me@davidcel.is>
Revert "Sign future releases"

This reverts commit 033730bc583cc9e75c1c541c310b5a434ff9fc3d.
Bundler packages gems for a cache even when bundling from a git
repository, so this commit broke recommendable for people who wanted to
bundle via edge.
Fix calls to set operators not splatting args

Fix a nasty bug where calls to SUNION, SDIFF, SINTER, and SUNIONSTORE
were not splatting Arrays of set keys. The Redis Ruby client
documentation made it seem as though these methods accepted Arrays, but
this wasn't working.

This should fix #59.

Signed-off-by: David Celis <me@davidcel.is>
Bump version to 2.0.3

Signed-off-by: David Celis <me@davidcel.is>
Add note about Redis memory usage

By not adding `recommendable:` to the prefix of every Redis
key name, it's very likely that memory usage would improve.
Adding sequel support
Readding line I accidently commented out
Merge pull request #64 from jeregrine/sequel-integration

Sequel integration
Fix a bug introduced with Sequel support

Signed-off-by: David Celis <me@davidcel.is>
Fix Travis build status image
Fix the Sequel bug for real now

Signed-off-by: David Celis <me@davidcel.is>