The Parallel Toy (up to date with and slightly more recent than The Powder Toy 99.5)

Build 8
	sim.threads(0) is equivalent to single-threaded TPT
	sim.threads(1) is multi-threading-capable TPT but with only 1 thread enabled; useful for establishing a reference
	sim.threads(N) is multi-threading-capable TPT but with N threads enabled
	Subframe is broken; this is by design and will not be fixed
	Lua scripts are NOT expected to crash the game anymore, please do report issues about this
	Scripts rely on impossible to multi-thread behaviour which hinders multi-threading
	Water equalization hinders multi-threading
	Partial frame steps hinder multi-threading and are no longer a useful debug tool
	To see whether multi-threading is hindered, run tpt.debug(tpt.DEBUG_SIMHUD)
	To see timing statistics, run tpt.debug(tpt.DEBUG_FRAMETIMES) (these DEBUG_ options combine with +)
