v0.03.4

More bug fixes:

• Unlocking research just requires making 50 ammo now, not buying preplaced cases. This fixes a soft-lock case
• Unintended duplicate production of products no longer happens. This was also causing materials to go negative sometimes
• Grenade fuzes correctly use up gunpowder now, and are disabled when they don't have enough materials to be made
• When buying 1 material, the prices are rounded up so that they are not too cheap or even 0
• Another Automated X buttons are no longer buyable if you don't have enough to buy them