Overhaul for the talk_did_you_have_pets, including support for revisiting the topic and revised responses for each pet choice
Migration for pet persistent data due to renamed storage variable
Added images for Natsuki idling while waiting for a response; bear in mind these won't be suitable for when Natsuki has an item in front of her (such as a prop or some desk items)
Introduces the following:
talk_did_you_have_pets, including support for revisiting the topic and revised responses for each pet choice