add IWarp interface, make warps more extensible
add comments, code fixes
ensure performs as interface states it should
add JailUtils
add InventoryUtils#add method

allows merging/compressing item stacks into an array or collection of ItemStack's
add InventoryUtils#remove methods

renamed existing remove method to removeAmount
improve Nucleus Kits

add IKit and IModifiableKit interface to allow more control over kit modifications

make KitManager easier to extend

Kit updated to conform with IKit

add KitModifier