SC# S-006 aware preference expiration check in getter
SC# S-006 renamed activity field to activityName
SC# S-006 fixed case when no preference set
RF# S-006 added parentheses for better readability
SC# S-006 fixed value set to StateElement when adaptee's value is null, now returns new Null() from heart package
SC# S-006 changed interest attribute name to user_interests
SC# S-006 created weather name mapping to XTTModel weather attribute values
SC# S-006 created HeartPreferences that stores XTTModel and manages it, also basic HML model, when nothing set yet
SC# S-006 RecommenderService uses HeaRT to get preferred poi type, based on context informations