ADDITIONS:
- Builder drones now visually carry the building they are placing

CHANGES:
- Builder drones now consume required resources on deployment
- Removing a ghost building refunds the resources if used by a drone

BUG FIXES:
- Fixed inventory UI from not updating properly
- Fixed shotgun unlock being stuck on top left of the screen
- Fixed builder drones from sometimes not building
- Fixed being able to place down multiple free essential buildings
- Fixed multiple builder drones deploying at the same time

OPTIMIZATIONS:
- Small memory optimization for non-defensive buildings

NOTE: Investigation into essence and iridium storages not saving metadata correctly is ongoing. If you experience problems with them, please report it in as much detail as possible. A temporary fix has been implemented in the mean time to prevent saves from soft-locking.