T8 Leadscrew Driven I3 Printer modification

Edit Jan 24, 2018:

I've finally completed a test assembly, and corrected a few issues that I had with things like endstops and some parts that needed adjustment in order to have some success with assembly. I also added provision for a cable drag between the heated build platform and the chassis so that wires don't get pinched. This takes the form of a tab on the Y nut holder and a small piece on the feet to which the drag chain can be attached. This is not incorporated into my test build yet.