Use multithreading without channel and threadpool

[ElegantBeef]

Yes the code will be threadsafe, though there is a caveat. If you create a 
variable that points to a reference type you will likely want to do `let myVar 
{.cursor.} = myRef` this creates a 'weak' reference to the reference that does 
not cause any GC on this thread. As this thread likely does not own that it's a 
good thing to do.