More realistic liquid like those in OE-Cake will be welcomed, I'm sure that will make a lot of fun and I'm sure that will make a lot of lag, too :-/
i like that you fixed bugs, but the lack of replace mode from old update is not cool.
(BTW i just came back from the dead)
I found a bug (at least I think it's a bug). Sparking any (as far as I tested) metal will spark any gold in a 4-px radius. Useful for repeaters, but a bug. (cloned/compiled from github, #! Linux, powder-legacy.)
As I saw, it was the other way around (gold is sparked by, but doesn't spark, materials 4 px away). I haven't tested a prebuilt one, maybe it was some quirk with scons. Perhaps someone could confirm whether this behavior exists in the prebuilt (preferably on a Linux machine)?
Test Results:
Sparking any GOLD particle causes all gold, and only gold, to spark. Sparking any metal particle causes the 3 adjacent GOLD particles, followed by the two nonadjacent GOLD particles, to spark. Reducing distance to 3 px causes sparks to die without spreading. Reducing distance to 2 px allows spark to flow freely (as with all conductives).