KBI Enriched Gravel

-Major code restructuring, splitting the mod into two modules, Resources and Enriched Gravel
-Added an API for other mods to add or remove drops to Enriched Gravel
-Relocated configuration file from /config/KBIgravelore to the /config/KBI folder
-Added configuration options (Resources.cfg to disable certain resources from everything (gravel drops, OreDictionary, recipes) except the Creative Menu
-Added configuration options (Enriched Gravel.cfg to disable parts of the mod, including the Sifter Block, Enriched Gravel, Handheld Sifters, or Gravel Buckets
-If Handheld Sifters are disabled, the Sifter Block is crafted with a block of wool instead of a Sturdy Sifter
-Crafting Sturdy Sifters with Alumin[i]um nuggets is now a separate option from enabling Aluminum nuggets, so you can use GregTech nuggets or such without enabling Aluminum nugget drops
-If the Resources module is disabled, currently there is no way to craft sifters without another mod adding iron nuggets; just disable all the mod resources individually in Resources.cfg or disable them as drops in Enriched Gravel.cfg and you'll be able to use iron nuggets.
-Decided to fix the changelog, instead of showing ALL changes in the entire history in each version :P

Caveats

All types of enriched gravel appear as "Slightly enriched" with NEI's block identification thingy, and with the Pick Block feature. Consider this an exploit prevention.