This new optimization is currently disabled by default so you can test it and give us feedback.
To enable it, add #define ENABLE_SDWEBIMAGE_DECODER and to not forget to add SDWebImageDecoder class
to your projet.
Thanks to Adam Jernst (https://github.com/adamjernst) and James Tang (https://github.com/mystcolor)
for this great optimization. See https://github.com/rs/SDWebImage/pull/18 for more info.