Use OFS and ORS; rearrange some SQL.
Add Schedule class as higher-level interface.
Create quick and dirty fluent interface.
Use meta-programming for ScheduleFor.
Align in_seconds.
Remove unnecessary returns.
Add shorthand for a database schedule.
Add RSpec.
Add and use SimpleCov.
Add rspec config.
Add initial schedule specifications.
Make them pass; move name resolution to database layer.
Prepare more (failing) specs.
Make the specs pass.