Di3mex/ExtraHardMode — pull request #4 by Mitsugaru (2013-03-09 19:12:52+00:00)
Title: Added block explosion protection based on height.

Small edit that my server wants.

Option to have explosions only happen below a configurable height on the map. Defaults to sea-level.
Also, another option that is enabled by default is that blocks that are affected by an explosion are protected if they are at or above the given configurable height.