All versions of Whistle Sim

-Added bell for steam whistle and rebuilt script for bell to sound more realistic. -Fixed bugs for both whistles. -Added diesel engine background volume control. -Added pitch and volume control for bells. :) -Made it so that you can hear the whistles and bells when you adjust pitch. -updated splash screen and app icon with transparency. -improved back end to facilitate adding new content soon. -Updated info blurbs for each whistle. Please leave a review if you like this app!