[x] consider to also check for NotLoaded and Unloaded -> For now we only check for Failed. With the other two, I am afraid of race conditions. Both are valid states when the loading hasn't started yet, which happens in a separate async task after calling load on the asset server.
Resolves #79
NotLoadedandUnloaded-> For now we only check forFailed. With the other two, I am afraid of race conditions. Both are valid states when the loading hasn't started yet, which happens in a separate async task after callingloadon the asset server.