Made the witch villager! (desc)

It was surprisingly easy to do, just two lines of code. I did attempt to
create the witch hut-type building for village generation, but that
failed miserably, miserably enough where I ripped out all of that code
before committing.

I'll get to creating the village building whenever I feel like I can
take that on.

Updated the properties file for version 1.2.0, and changed the name of a
class.
Fixed versioning.

The same thing Blackhole did, but with the 1.2.0 branch.
Added witch hut structure. (rough)
Added trades, fixed hut generation.

Added all trades for the village witch (all base potions). Also made the
witch hut desert/plains sensitive, and fixed the stairs in the roof
being orientated wrong. Changed the stairs to slabs. Also changed the
witch's eyes to green.
Fixed witch trades and hut weight.

The hut now spawns normally in villages. Fixed trades from the witch
giving an invalid stack of potions.
Final tweaks to the witch/witch hut.

Added in ingredient trades and fixed prices for the potions. Also added
glass as an option during generation for the witch hut, and changed the
witch villager's skin tone to match the other villagers.
Changed the witch villager profession ID option.
DepLoader installed.

Brewcraft can now download Core all by itself.
Added a non-functional Sprayer block.

I created all necessary classes, including the factory, tile entity, and
such. All slots are in place, the Gui is finished. No potions are
sprayed, though. We're going to probably need to inherit IRedstoneTile
(just found that, don't know how to use it), and have it spray one
potion per redstone signal, sort of like a dispenser. We may also need a
new MetaTile extension that can handle spraying particles in a cloud and
inflicting a potion effect from the item. For now, the block is simply a
MetaTile.
Sprayer now has a model.
Update README.
Fixed Build.gradle derp.

It works for sure this time, I tested it.
Sprayer is now functional.

Sprayer now works! Could need a couple of tweaks and alterations, but it
works.
Titles now don't intersect the tank (Sprayer).
Removed input/output slots from Brewery.
Added Kegs (WIP).
Refactor: renamed everything to 'keg'.

I'm thinking about redoing the GUI, because it's the same one as the
Sprayer at the moment. . .
Whoops. :p
Added Iron Keg for molten fluids.

Still thinking about what to do with the Gui.
Changed the Keg metadata system to use strings.

Easier to create new Kegs with this system. . . still thinking on the
Gui.