modified test values for -should flip pixels horizontally of all RGBA components for a [2,1] image- test and added new test -should flip pixels horizontally of all RGBA components for a [2,2] image-
modified test values for -should flip pixels horizontally of all RGBA components for a [2,1] image- test and added new test -should flip pixels horizontally of all RGBA components for a [2,2] image-

image-js/image-js,image-js/core,image-js/ij,image-js/image-js,image-js/ij,image-js/ij,image-js/core