Version 2.3

* proguard crash fix
* Multiple timers with left/right swipe navigation
* Swipe up to reveal and delete the current timer
* Page indicator shows position (e.g. 1/4)
* Fixed UI state and fragment recycling glitches
* GUI fix: Added more Toasts to help with navigation.
* Logic fix: Time can now be written with any of these: ":", ",", ".", " "

