HigherPower - Bi-Modal Ejector

Well, I finally added a tier 2 machine that's actually a machine to HigherPower.  This machine is the "bi-modal ejector", a combination of the dispenser and dropper that sports a few bonuses.  Instead of being triggered by redstone, it can only be fired with an appropriate packet coming in on the input face.  Changing between the two modes (dispenser and dropper) is accomplished by sending a different kind of packet.  A firing packet can specify which slot from which to draw the ammunition.  In addition to creating that machine, I wrote up the Technical Manual articles for all existing Eethur machines and fixed some bugs.  Soon, I want to absorb a lot of copy-pasted functionality of my tile entities into some HPTileEntity superclass.