Core Feature: Locations update background variant based on time of day.

[ShiJbey]

Overview

Locations should update their background variant based on the current time of day. However, this should happen automatically without writers needing to specify the time of day as an additional tag. Also, calls to AdvanceTime() from within Ink scripts should also result in the current background updating itself.

Planned version: 1.0

This feature implies the following:

• Locations should store the last tags used to set their sprite.
• We have a way to add tags to the current list of sprite tags without overwriting the list.
• Subsequent calls to display the same background, without specifying sprite tags, should result in the same sprite being presented.

This feature might benefit from:

• An optional tag syntax that would allow us to specify the time-of-day as an optional tag that the system will try to satisfy but will fall back to the required tags if none meets all the optional tags