This is a somewhat small update but it has a decent impact on how pumps work.

All pump effects are synchronized - 16 times per second (or a bit more if you're fast forwarding or less if you're slowing things down), all of the pumps will think about how they want to change their sources, and then in a second phase they will all at once make those changes. The printer/dye part does the same and on the same cooldown. This prevents some race conditions that shouldn't come up and allows clock based computation which will probably be useful in some future puzzles.

This does also have the effect of slowing down convergence of some of the puzzles which relied on pump updates once per game tick to very quickly zero in on a fixed point of a dynamical system. Generally I've only seen a slow down of a few seconds.

There is now a speed slider which ranges continuously from 0.25x speed to 4x speed. Hopefully the UI looks ok. This replaces the CTRL to fast forward. As of now I haven't changed the puzzle descriptions to reflect this change and the UI will probably be tweaked a tiny bit in the next update.

There's one known bug here which is that for some reason, at very high oscillation speeds, flow rates can be messed up and give results that don't happen at slower speeds. This should be fixed soon once I figure out what's causing it, but hopefully it's not an issue. If you find it's breaking your solution contact me.