Run a list of functions in order in a given object context. The functions can be callback-taking or promise-returning.
This module is zalgo-exposing, meaning that synchronous calls to the cb functions will result in a sync call to the supplied cb, and async calls will result in the cb being called asynchronously. It does not artificially defer if callbacks are called synchronously.
loop(context, functionList, doneCallback, errorCallback)
Run all the functions in the context of the context object, and then call the doneCallback or call the errorCallback if there are any errors.