Adds a configurable runtime schedule

-Overall performance and compatibility improvements for the latest iOS platforms.

-Deduct settings for 90° bends can now be customized for 1/2" through 4" conduit (16-103mm)
-Additional outputs included for Rolling Offset calculations
-Digital Level made available as in-app purchase

-Added support for iOS 7

-Added Kicked 90° and Segmented 90° bend calculators

-Fixed calculator icons for iOS6

-Added new functionality: Rolling Offsets

-Updated GUI