(e.g. if there's room for 50 of some item, and you send a stack of 99,
50 are added to the chest and a stack of 49 is rejected and sent
on to the next destination)
Make the generic processing machine code willing to complete more than
one processing cycle in one ABM cycle, and more generally to carry
over leftover processing effort after completing a processing cycle.
The src_time meta item now represents accumulated processing effort
(time multiplied by speed) in a scaled form (to retain fractions),
rather than just time in integral seconds. This affects the MV furnace,
with speed 4 and most recipe times being 3 s, and will be essential for
faster furnaces.
The centrifuge, currently only existing in an MV variety, is a machine
that separates a mixed substance into its constituents. Currently the
main use is to reverse alloying of metals. The alloy separation recipes
intentionally only operate on the dust form of metals, making this less
convenient than the original alloying. It also only recovers metal
constituents, not the carbon that went into cast iron or carbon steel.
This change incidentally generalises the technic recipe and
machine infrastructure to handle recipes with multiple outputs.
As unified_inventory's craft guide can't yet handle that, these recipes
are not registered there.
