TODOs
moving messages to make more sense
Better caching support
didReceiveMemoryWarning
code style
Better isRefreshing behaviour
didReceiveMemoryWarning
no need to check isLoading, isRefreshing is used differently
remove for release build
Onboarding text
didReceiveMemoryWarning
Smarter writeToDisk
initializing properties through accessors
UIApplicationDidReceiveMemoryWarningNotification
Fix xcode analyzation warning
proper cache regeneration
forward appearance methods

it's not sending them twice when transitioning and they are needed when the whole PVC is appearing/dissapearing
writeToDisk in dealloc

just to be save (what if we get unloaded out of the blue)
don't clear usesMusicAppNumber

it contains valuable information and does not changes often
reworked Hud display

a hud display can be initiated from the background