Modular economy core for GIZMOD

TRADE_ROUTES_UPDATE: Make contracts for goods and deliver them to the other player's Customs Warehouse! Ledgering is handled automatically!

ENABLE GZ-TWEAKS FOR SUPPORT FOR OTHER LOOT/ECONOMY MODS!

 - Alcohol, Tobacco, Firearms, Explosives, Lasers, Plasmas and Nukes (ATFELPN)
 - Planet Pandora
 - More coming soonTM

Multiplayer and single player trade, market, ledger and currency. Fully functioning economy system for Factorio. *Make and accept offers from other players * Supply/demand based economy * Automate purchases and sell excess goods for FLUX. And more.

Q: How does trading work?
A: There are multiple ways to trade in GZ-Economy.

• You can trade with other players by listing items and your asking price in the Sell menu inside the Supply Depot. The Buy menu lists items for sale by other players. The Supply Depot costs steel chests, which require steel processing, which is unlocked by automation science.
• You can buy directly from the global market (+/-15% markup) using the FluxMart and AutoBuy tabs. Set a target amount and the Supply Depot will maintain that item in that amount as long as there are funds available in your account and there is market availability. SUPPLY IS NOT UNLIMITED! The market CAN run out. Do not depend solely on the market for raw resources.
• You can sell directly to the global market (at 30% value) by directly inserting items into the Supply Depot.
  -#AUTOMATED_DELIVERIES_UPDATE: Automated deliveries and contracts are here. Post a Goods Wanted or Goods Available ad; then deliver and receive goods with automatic ledgering. Infrastructure required!