New fluidcache command: MISSING.

Use FC MISSING to see the curatives relative to your living/undead
status, or add a qualifier for more specific details.

Qualifiers
----------
Living: Elixirs and salves.
Undead: Serums, poultices, and tinctures.
Venoms: Totally not venoms, nope.
Resins: Sentinel resins.
All: All of the above at once.

Penned by my hand on an unknown date.