Make find_elements functions generators.

[TannerBaldus]

I found when using find_elements when there was a lot of elements took a bit of time. I think some execution time could be saved if they find_elements didn't return a list but instead was a generator.
I haven't tested to see if the list or the selenium search was the main culprit of the delay. But I thought I'd bring it up with you since you might have some insight into that.

One possible con I could think of changing over to a generator would be that sometimes it would be useful to be able manipulate elements based off the index. However with a generator a dev could easily cast to list if she wants.

If this sounds like something that you'd like to incorporate, I'll work on it in a bit.