Log message:
Initial import of devel/lua-cqueues version 20171014.

Stackable Continuation Queues.

cqueues is a type of event loop for Lua, except it's not a classic
event loop. It doesn't use callbacks - neither as part of the API
nor internally - but instead you communicate with an event controller
by the yielding and resumption of Lua coroutines using objects that
adhere to a simple interface.