don't update existing records, create new ones
fix bug where only one record type was updated at a time
fix spec
add latest flag to records to keep track of the current record for each user
use latest column in is_faster_than_old_record validation
return all updated records from CreateNewRecords.for
rename CreateNewRecords to UpdateLatestRecords
simplify Window by using SimpleDelegator
return nil for Mean and Average if they are called upon an empty array
remove RollingAverage
add class for recreating user's record history
update rake tasks for recreating records
improve performance of recreating record history by using activerecord-import and skipping validations
speed up rake task for creating record history
fix and improve RecreateRecordHistory specs
update comments when recreating record history
fix RecreateRecordHistory which didn't fill out the singles association