Added Fragbomb

Added a simple timed bomb to items, with corresponding "lit" entity.
Detonates in 5-7 seconds. Stackable to 3.
Added Lantern

Added simple lantern and corresponding "lit" entity. Emits a large,
bright, yellowish white light. Can be dropped; dropped entity will emit
light for five minutes or until cleaned up. Deals damage equivalent to
typical "junk" item.
Added Proximity Mine

Added simple proximity mine item and corresponding "lit" entity. Emits
rapidly strobing orange light until armed. Arms after two seconds,
light turns solid red. NPCs found within 256 units every half second
cause detonation. Stackable up to 3.
Merge pull request #1 from nanospork/nanospork-dev

Fragbomb, Lantern, and Proximity Mine