Image type support

[asbjornenge]

Hi there,

I've been trying your plugin for an mobile webapp and it works great for some images. For others the plugin seems to go into an internal loop and the whole browser hangs (both safari and chrome on ios).

I'm temporarily storing the images in localstorage as base64 encoded png's. I then convert these base64 strings to images using img.src='data:image/png;base64,'+base64data. It seems to me that if the ratio is not accurate it hangs, but that is probably not the real reason.

Any input would be appreciated!