* Fixed wrong image for Fixed Firm Pose
* Updated for Swift 4.2
* Switched final gong sound

-Supporting traditional 90 minute in addition to new 'express' 60 minute session
-Sound update

-New and improved look and feel!
-New 60 minute session in addition to traditional 90 minute session

- background music update and fix
- timer pauses when going to background
- various bug fixes and enhancements

-Added more detailed voice cue for posture transitions

-update and bug fixes
-updated to repeat posture name at second set

-reduced default background music volume
-updated to ensure screen doesn't fade on iOS 8 devices