New functions get/printSrcsetImage() for some sd/hd image counterpart functionality without breakpoints. Used by all get/printHDxxx functions internally now.
Picturefill 2.2
$hd parameter that some functions have has now the default TRUE since this is why you use them. The parameter is kept because the functions are used within others where you might not want or need a HD counterpart (e.g. simple breakpoint switching on fluid layouts)
Merge pull request #8 from acrylian/zp_picturefill-1.3

Zp picturefill 1.3