## About The Pull Request
Quick refactor, replaces `spec_updatehealth` with use of
`COMSIG_LIVING_HEALTH_UPDATE`.
`spec_updatehealth` was only used by one species, ethereals, and it was
used in a (in my opinion) janky way by calling `spec_updatehealth`
constantly.
This has one downside - `COMSIG_LIVING_HEALTH_UPDATE` is NOT sent if the
mob is in godmode, while `spec_updatehealth` was, which means godmoded
ethereals may not update 100% accurately according to their health
before entering godmode, but I doubt this will come into play often at
all.
- [x] I tested this PR
## Why It's Good For The Game
`updatehealth` is kinda hot, not turbo hot but a little hot, so this
helps performance a bit.
## Changelog
🆑 Melbert
refactor: Refactors how ethereals update their color when damaged.
/🆑