RunAsyncRunner pulls tasks off a queue and processes them.

RunTask helps sending a task.Request into the common concurrency stream.

StartWorkers operates the common concurrency stream, ie, it will process all IronFunctions tasks, either sync or async.

FuncLogger reads STDERR output from a container and outputs it in a parseable structured log format, see: https://github.com/iron-io/functions/issues/76.

HotFn actually interfaces an incoming task from the common concurrency stream into a long lived container.