Major release introducing relationships, eager loading, type-safe JOINs, soft deletes, and advanced hooks.

Features:
- Relacionamentos: HasMany, BelongsTo, ManyToMany
- Eager Loading (Preload) para resolver N+1 queries
- JOINs Type-Safe com generics
- Soft Deletes com global scopes
- Hooks avançados: AfterCreate, BeforeUpdate, etc.

See CHANGELOG.md for full details.