Cell regeneration and reperoduction

We're completely overhauling reproductase (ie, removing it and putting something in which actually makes a modicum of scientific sense) some time down the line. The full replacement is tied closely to Auto-Evo and so on, so reproductase will probably continue to be a placeholder until then.

It was originally put in simply to give the player something to work towards before being able to reproduce. Nothing more, nothing less -- it wasn't designed to model mitosis, or cell growth, or whatever, it's just a simple gameplay addition to test a couple different parts of the code.

For healing, that depends a lot on how we'll end up modelling health, but there are certainly all sorts of process that go on within a microbe to recover from damage or maintain homeostasis in the face of stress.

I think our current plan involves multiple forms of health and damage:
- Specific organelles can take damage, reducing their throughput, possibly with other knock-on effects
- Other components of the cell as a whole can be targeted, for example, the cell wall, or the membrane, or the cytoskeleton, etc.

Note, though, that none of these actually act to decrease the cell's "hp", instead, they make it more difficult for the cell to continue living, and eventually it would lose the ability to maintain homeostasis, various processes alternatively spiral out of control (for example, osmosis inflating the cell until it lyses) or grind to a halt (for example, control of free radicals via peroxisomes) and the cell is pronounced dead.

Obviously, such a system doesn't lend itself well towards an HP bar, so it could easily be completely impossible for the player to comprehend, so we have our work cut out for us there.