Issue Description

While using model.bulkCreate, as we pass the options, an object which contains transaction, it comes modified after the execution

What are you doing?

We have called bulk

what is prefer way to add relation and remove relation? I found example as below, but I did't find any document about the two methods.

 case 'ADD_AUTHOR_TO_BOOK':
        Book.withId(action.payload.bookId).authors.add(action.payload.author);  // add new entity ,  add relation?  this doesn't work.
        break;
    case 'REMOVE_AUTHOR_FROM_BOOK':
        Book.withId(action.payload.bo

@bajtos suggested to provide strongly typed context types based on the hook name.

For example:

export interface AccessHookContext<T extends typeof PersistedModel> {
  Model: T;
  query: Filter<T>;
}

export type Listener<Ctx> = (ctx: Ctx, next: (err?: any) => void) => void;

class Persi

Feature request:

Select builders are often used in sub query with aliases.
It would be a nice syntax addition if instead of using an object we could output the builder with a alias directly thanks to an as method

//currently 
sh.select().from({
  as:'foo',
  value:sh.select().from('users').where('age','>',42).noop()
});

could be written:

sh.sele