Forgot to update example RAT to 0.11
Remove inefficient Joiner
First framework support for no-known-items for ALS
Add Jackson databind
Switch to JSON messages for updates
Touch up failing Preference test, copyright headers, imports
Output known items in batch layer ALS update
Implement known items for ALS in speed layer too
Add ALS serving layer model support for known items
Add Scala app APIs, and example. Remove no-op ServingModel and refactor test handling of mocks in ALS serving
Fix mixed Java/Scala compilation
Update plugins, and, example doesn't really need to avoid inheriting from parent
Give ALS serving layer access to Kafka queue for inputs #39. Closes #39
Implementation of /because REST endpoint
Implementation of /because REST endpoint