This mod was initialy created by BinbinHfr.

https://mods.factorio.com/user/binbinhfr
https://forums.factorio.com/memberlist.php?mode=viewprofile&u=14267&sid=f9c6cba7d2ee3384bf1f939a4fe50bb9

original mod URLs:
https://mods.factorio.com/mods/binbinhfr/BlackMarket
https://forums.factorio.com/viewtopic.php?f=92&t=30889


Credits:
core/Class : npo6ka from FNEI mod (MIT) https://github.com/npo6ka/FNEI
Factorio-Stdlib: Afforess https://github.com/Afforess/Factorio-Stdlib/blob/master/LICENSE
