Image Macro does not render external images with uri parameters

Images with parameters in the URI will not be rendered and also don't appear as img tags in the generated html.

For example, the following is ok:

{image:http://www.yoshtec.com/image/go0.png}

But the following won't be displayed:

{image:http://www.yoshtec.com/image/go0.png?hello=true}