Move Tasks from ToDo.md to Issues

[viluon]

These tasks have to be made into issues:

• Add overloads for Point3D
• What about the constructor chain interface?
• Grid3D should use Point3D for origin
• Rooms are somewhat limited. They can only have 4 walls. What about non-rectangular rooms?
• Grid3D:resize()
• Should room floors be limited only to the inner area (exclude the borders with walls)?
• Move stuff from ToDo to GitHub Issues (done because the ToDo.md file has been deleted and this is in fact an issue 😛 )
• Implement require(), dofile() is dumb
• Building should keep a list of outside walls
• IDuplicable?
• Generalize Palette, add RoomPalette
• Use RoomPalette in :populate() along with BuildingPopulator or something similar
  • BuildingPopulator will contain a list of rules such as what Rooms the building should use and how should they be connected, how many of them etc
  • BuildingPopulators will define Building types, for example a family house vs. mall etc
  • BuildingPopulators should have a clue about how the building is structured (floors, staircases, elevators?)
• Rooms should hold the information about windows, Buildings should only link to them

Note: The fact that a task here is checked means that it has been made into an issue, it doesn't mean it's solved.