Besides making predefs convenient, naming a predef no longer requires
adding or renaming a predef constant. This also lets predefs be rearranged at will.
- Use more substatus constants.
- Reformat some code to be more atomic.
- Add constants for unused status prevention held item effects.
- Remove pointless or redundant comments.
The PartyMon struct is really the box struct with volatile variables like status added.
Some other labels have been reworked.
Move structs no longer have explicit labels since their location is arbitrary and usually shared.
