as.list.iteror          Gather all values emitted by iterators and
                        channels.
async                   Create an asynchronous task from sequential
                        code.
awaitNext               Wait for the next value from a channel or
                        stream.
channel                 An object representing a sequence of future
                        values.
combine                 Combine several channels into one.
debugAsync              Toggle single-step debugging for a coroutine.
delay                   Asynchronous pause.
format.coroutine        Query / display coroutine properties and state.
gen                     Create an iterator using sequential code.
goto                    Coroutine switch with delimited goto.
graphAsync              Draw a graph representation of a coroutine.
ilimit                  Limit the number of elements emitted by an
                        iterator.
iseq                    Iterator equivalent of seq.
iteror                  An efficient and compact iteration protocol.
nextThen                Receive values from channels by callback.
pausables               Pausable functions.
run                     Execute a generator expression immediately,
                        collecting yielded values.
stream                  Create an asynchronous iterator by writing
                        sequential code.
