Imageloader.load() and premultiply alpha

I don’t know anymore, the code with imageloader I have written about half year ago as “study case”.
I have read the forum and decided to use imageloader, because it is a bit faster
and can process both sys.load_resource data and directly PNG file data (without io. before).
I have tested it and found it good. But I have not tested it with transparent images…
Now I have to merge partial “study cases” to whole project
therefore I refactor and modularize the code.
I have replaced imageloader code with image.load at first to continue working.