Experimental Change

Several small changes are wrapped-up in this update. A few noteworthy changes that come to mind include:

Fish drones are now rarely spotted darting through rocks.

Fish drones are penned inside the play area.

The ceiling is now visualized.

The GUI elements have been slightly altered to add text percentage alongside the slider indicators.

*The WebGL version is running experimental code that sets the # of fish in the play area based on your local frame rate; the idea is to hopefully ensure a (mostly) smooth and high frame-rate experience. On my tired ol' box, it can still be a bit stuttery, especially in the first few moments of gameplay, but it seems to settle into a better rhythm shortly.  The Linux and Windows versions are not currently using this code, and each will simply have you running around with 150 fish, though this is likely to change in the future.