Merge pull request #35 from laod/master

Limestone feature cleanup pass. Config added.
Finished the basic purity system
Tweaks + re-organization of how metal properties are handled
Update pt_BR.properties

Update pt_BR for the most recent changes
Merge pull request #36 from WisdomMage/patch-2

Update pt_BR.properties
Wormwood now only drops seed surplus if fully grown, otherise 1 or 0 seeds
Merge branch 'master' of https://github.com/CyanideX/Electrodynamics
Minor tweak to limestone code to prevent bugs with invisible blocks.