Feature Request: Add ability to skip already downloaded images

[Corbachu]

Love this tool, but I've noticed it will download previously grabbed images (and rename them) -- that is fine and all, but an option should really be given to skip downloads of files with the same MD5 hash rather than re-download and append -x to the end of the filename.

If this is something that you can add in quickly, I would appreciate it and would be more than willing to help test it out! I would write it myself but, I'm only a C/C++ coder. The syntax and language seems stylistically similar, so I'm sure with a bit of research I could probably hack it in, but I don't have the time at the moment. :/

[Ridolf]

Did you write it yourself?

[Corbachu]

I have been balancing between learning the code and writing it. Such a thing I can do in C++ pretty quickly so i just need to port the code. Like I said, more of a timing thing, but if you are interested I can keep you up to date