new async classes working (WIP)
added async() tests
added await() tests
added more tests for async() variants
added more async variants and their tests
refactor dirs WIP
refactor dirs WIP
refactor dirs WIP
refactor async dirs, revise protocols
refactor async dirs
various tweaks
async.mod(...) WIP
arityFor => acceptsCallback
async.config working, semaphore made global
fiberPool cleanup
async.mod revamp
remove static SuspendableType
finish async.mod
added tests for async.config & async.mod
changed protocol.invoke() signature