CleverRaven/Cataclysm-DDA — pull request #4087 by Rivet-the-Zombie (2013-11-02 22:10:16+00:00)
Title: Changes charcoal water purifier functionality a bit.

Instead of somehow eating massive amounts of charcoal in order to purify water, it now requires charcoal to produce and works in a much more reasonable fashion, purifying water until the charcoal filter inside is 'dirty'.

This makes it more efficient in use, but it also means that it can't be reloaded.