App prevents device from going to sleep while running drills.
Updates for iOS 13.

Strings: Sets and reps that let you gradually shorten drill time.
Now you can specify a default number of reps for each drill.
Shorter, snappy sounds for clarity.
Ability to silence the "ready call."
Updates for iPhone X.

Fixed bug saving custom drill instructions.
Fixed edit form display for certain devices running iOS 7.1.

Fixed bug in iOS 7 where edit form covers Navigation Bar.

Bugs fixed.

Added ability to fully customize drills.  Add and edit your own drills. Go nuts!
Bugs fixed.