Farmhouse Advent Calendar (with tabs and slots)

UPDATE Nov 28 2016: I remixed the key so it would fit more snugly.

Amazed by ClassyGoat's fantastic Farmhouse Advent Calendar, but intimidated by the building and gluing required? Got a big build area, like the Robo3D? Do you hate supports? Then this remix is for you! I made a few mechanical changes to make this easier to assemble:

- The walls now have tabs for gluing them together - just apply glue to the tabs and clamp the walls together until they set. (I printed a few of these fo