Need error checking

[vspk-irkutsk]

Error checking is not implemented here, and I have to hope that my app won't crash when some unexpected thing will occur. I would like to see something like that:

cropFilter, err :=  gift.Crop(image.Rect(x1, y1, x2, y2))
if err != nil {
      // do something
}

blurFilter, err := gift.GaussianBlur(25)
if err != nil {
      // do something
}

mainFilter, err := gift.New(cropFilter, blurFilter)
if err != nil {
      // do something
}