Versions 0.54

Base effect of fire spheres, fire skulls, bottles of tears and dark amulets increased: +50% -> +100% to productivity.
Units no longer need to have an upgrade to get spheres, skulls, bottles and amulets.
Contracts related to spheres, skulls, bottles and amulets gained +1 max level.
Added LOCAL backups.
[Demons] Infernal piggy bank has been redesigned.
[Demons] Added contract: Auto-Buy. With it, the CEO will be able to create units without your involvement.