* Move to new options system.
switch to using self.random
reformat rules file.
* further reformats
* fix tests to use new options system.
* fix slot data to not use self.multiworld
* I hate python
* new starting_items docstring to prepare for 1.20.5+ item components.
fix invalid json being output to starting_items
* more typing fixes.
* stupid quotes around type declarations
* removed unused variable in ItemPool.py
change null check in Structures.py
* update rules "self" variable to a "world: MinecraftWorld" variable
* get key, and not value for required bosses.
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