Photo Gallery Live Wallpaper

Sep 13, 2015

Fixes crash on KitKat+ devices.
a bunch of changes by Dániel Kalmár.
turned stretching into scaling (keeps aspect ratio, can up&down scale)
better way to figure out if image needs rotating
the scaled & rotated image is only generated once and cached
added white background to preferences screen
all the features should work well together in any permutation