Pre 0.B mutations

Some last-minute love for Cephalopods (pre-thresh); likely either post-thresh for Rat or a pre-thresh Horse category will be worked in too.
Was originally gonna have a set of three sub-mutations to bounce around: Octo bar pupils, Cuttlefish 3 pupils (seriously, google image search, they look like the cat face emoji), and squid round pupils.  Decided it wasn't worth specifying that level of detail; folks would likely prefer to just RP whatever detail they liked.

Hence the capital Different.