Items that are not available in-game are now consolidated into `isNonstandard`. 'Past' indicates that the item no longer works in the current generation. 'Unobtainable' indicates that the item works but can only be obtained through hacking.
Credit to @lusamine for testing many of these items in Sw/Sh.
They are immediately visible after Team Preview in-game, but PS! lacks that feature so this is the best compromise. This also fixes their appearance in Hackmons Team Preview.
- `Obtainable` and `Team Preview` are now part of `Standard`
- `minSourceGen: 8` is now a part of `-Unreleased` (which is part of
`Obtainable`) in Gen 8. Instead, it's NatDex that overrides it with
`minSourceGen: 1`. This allows `!Standard, Standard NatDex` and
`!Standard NatDex, Standard` to work as intended.
- Duplicate rules are now checked for (does not apply to subrules, so
multiple inheritance is still possible)
- It is now possible to inherit `minSourceGen` from rules.
This merges the Glitch and Pokestar tags into a new Unobtainable tag that defines Pokemon that are only obtainable through hacking (such as Floette-Eternal and Missingno.). These Pokemon are legal in Hackmons of their specific generation only. Custom is used in future gens instead of Past because of National Dex legality.
Keldeo-R is not a battle forme and is possible to hack without Secret Sword, unlike most other formes. It should be restricted by the rule that prevents hacks and not the rule that validates battle formes. This is mostly relevant for Hackmons.
Obtaintable Formes is for in-battle forme changes. Obtainable makes sure a team is possible to obtain in-game without hacking. Multiple Kyurem/Necrozma formes are the latter case.
- In gen 8, Silvally is able to enter battles in different types if it doesn't have RKS System (i.e. it doesn't require a Memory).
- In gen 8, formes that transform in battle are no longer able to start in that forme (relevant to BH).
Pokemon that are holding an Item that enables Mega Evolution, Primal Revision, or the use of a Z-Move cannot Dynamax. A Rayquaza that can Mega Evolve also cannot Dynamax.
Also fixes an alias loop with the national dex format/ruleset.
