Upgrade of Barbed-Wire Mod by MrAlwaysAwesome. (pst.. it's now named Barbed Spikes!)

Original mod: https://mods.factorio.com/mod/Barbed-Wire
Keiler's version of mod: https://mods.factorio.com/mod/Barbed-Wire-Light-016
Original idea of mod on Mod Forums: https://forums.factorio.com/viewtopic.php?f=93&t=33281

This mod adds new defensive structures called barbed-spikes. After being placed down, any enemy that walks on them is damaged and slowed. Can be used with any other weapon like turret or laser turret. Very efficient when placed strategic.

Performance is improved with better visuals and technology tree.

Upgrades can be done to the standard barbed spike by researching the rest of the barbed spike family:
- Reinforced: More health and damage.
- Slowing: Increases the slowdown effect.
- Poison: Deals extra poison damage.
- Or all of them above in one super barbed spike.