Added custom assistance data model
Wiring views.
Added wiring for editing simple custom sets.
More wiring of edit set view controller. Use training max now works.
Added failing test for lift selector.
Added debugging for figuring out why set change crashes sometimes.
Merged master
Implemented custom lift selector.
Built editor. Need to create generator.
Added generator and tests.
Added custom lifts activity.
Lifts can be added and removed.
Custom lift renaming now works.
Custom lifts can now be edited.
v19