OpenForge Stone Gatehouse

I created this some time ago, but never released it. This is in the style of the older OpenForge 1.0 stone series (including that it's an "edge" tile), but I've updated it to have support for the OpenForge 2.0 style bases. This piece and the pieces I'll release on friday (the barbican) are actually what inspired me to do the changes I did in OpenForge 2.0, as I couldn't figure out a real good way to add on an additional story to this, and thus the bases were born. I'll probably eventually rep