HKI Elements has been released which is a full dashboard replacement suite. With a little effort you can recreate HKI 5, but I would really suggest checking out the new stuff that is possible instead.
HKI Elements is created with the visual editor in mind so no need for YAML, no need for any other custom cards and no need for any integrations altering Home Assistant. If you want to only use the HKI cards, well… you can!