Convert block manager to new manager system
Not required
Remove API
Convert inventory manager to new systems
Convert region manager to new system
Convert cuboid manager to new system
Remove useless class
Remove .get___Manager()
Because a mix of plural and not plural is weird
cuboids are a subset of regions
Refactor for a better name
Convert money manager to new system
Convert hook manager to new system
Relocate hook manager
Pretty much done, other parts will be covered in planned updates