add service for recalculating records history for given singles
fix spec dependency on rails model
rewrite RecalculateRecordsHistory in an iterative style
build record from singles in RecalculateRecordsHistory
fix .build_from_singles_type_and_time
use RecalculateRecordsHistory in SinglesController; remove old UpdateRecentRecords class
add bang version of RecalculateRecordsHistory.for which saves the new records
add service class for removing records depending on the destroyed/updated single
invalidate and recreate records if deleted/updated
merge recreation of records for create and destroy into one case
default to no old record when recalculating records
add mean of 100
update records rake task to use RecalculateRecordsHistory
add feature spec for POST /api/puzzles/3x3x3/singles
refactor json response in singles controller
consistent naming of specs
add missing newline at the eof
add spec for records api
add recent records to api
grab recent records from backbone client