[davidfor]

I have made the changes to the plugin to make it Python 3 compatible. I don't use it much, but, it was there was an error each time I changed library. That was annoying me and causing some other problems.

I have tested some basic function in both the release version of calibre and the Python 3 betas. It all seems to work. But, as I don't use it much, I haven't tested everything. It loads, will find duplicates in both the current library and another library, but, I have only used the default options for everything. If someone who does use it in test it in either environment, that would be very helpful. And honestly, at this point, I am more concerned about breaking the plugin in the released version of calibre than the Python 3 version.

@Jeremy_D: Sorry, I had completely forgotten that you had picked this plugin to look at until I came to do this post.