Merge branch 'gold' into beta

* gold:
  Rebalance: Medicine now makes 3 potions from 1 stack of plants
  Making coke from wood no longer creates ash.
  Updated readme with new contributor's guide #dev
Merge branch 'gold' into orc_rebalance

* gold:
  Clean-up of boneyard reactions and typo fixes
  Rebalance: Medicine now makes 3 potions from 1 stack of plants
  Making coke from wood no longer creates ash.
  Updated readme with new contributor's guide #dev
Orcs now have comprable boneyard products to dwarves.

Added:
    * Coffins
    * Hatch covers
    * Slabs
    * Statues
    * Jugs
    * Candelabras, braziers and fireplaces
    * Mortar and pestle
    * Nest boxes and hives
    * Large pots

Removed:
    * Bone-rattles

Fixes #107
Merge branch 'orc_rebalance' into beta

* orc_rebalance:
  Orcs now have comprable boneyard products to dwarves.
  Clean-up of boneyard reactions and typo fixes
Orcfort: The Orcish molten pit now doubles as a slag pit.
Merge branch 'orc_rebalance' into beta

* orc_rebalance:
  Orcfort: The Orcish molten pit now doubles as a slag pit.
Merge branch 'gold' into beta

* gold:
  exported options #102 and diggingInvaders #106
  allow ammo metals
Merge branch 'gold' into orc_rebalance

* gold:
  exported options #102 and diggingInvaders #106
  allow ammo metals
Orcfort: Added many missing reactions for ore-processor products to smelter.
Merge branch 'orc_rebalance' into beta

* orc_rebalance:
  Orcfort: Added many missing reactions for ore-processor products to smelter.
Merge branch 'beta' into alpha

* beta:
  Orcfort: Added many missing reactions for ore-processor products to smelter.
  Orcfort: The Orcish molten pit now doubles as a slag pit.
  Orcs now have comprable boneyard products to dwarves.