Convert DS4ActorSheet, DS4CharacterActorSheet, and DS4CreatureActorSheet
from ApplicationV1 to ApplicationV2 architecture. Update all templates
to use data-action attributes. Implement manual tab system and preserve
all existing functionality including item management, effects, and
rolling system.
BREAKING CHANGE: Requires FoundryVTT ApplicationV2 system
This also allows to assign a spell to multiple spell groups, which is the case for many spells in
the SRD.
Additionally, this makes many small improvements and fixes to the provided spell compendium.
World data (including compendium packs) is migrated automatically. In order to also migrate packs
provided by modules, you can use the following macro:
```js
const pack = game.packs.get("<name-of-the-module>.<name-of-the-pack>");
game.ds4.migration.migrateCompendiumFromTo(pack, 4, 5);
```
