maintainZoomAfterSetImage added to public API.
maintainZoomAfterSetImage added to public API.

hannesa2/TouchImageView,YX1917/TouchImageView,MikeOrtiz/TouchImageView,fashioncj/TouchImageView,slavakraynov/TouchImageView,qingsong-xu/TouchImageView,bpappin/TouchImageView,lcyluo/TouchImageView,kzganesan/TouchImageView,JVillella/TouchImageView,ckashby/TouchImageView,ashu11168/TouchImageView,angcyo/TouchImageView,Juneor/TouchImageView,bigsui/TouchImageView,heocon8319/TouchImageView,hannesa2/TouchImageView,Katkov/TouchImageView,Volcanoscar/TouchImageView