- Significant rewrite with b/c breaks
	- Completion listeners should now be accomplished via `.done(listener)` (listens once) or `.whenDone(listener)` (listener persists)
		- These methods are promises in that they will execute the listener if the item is already complete
		- They listen for the `done` event
	- The execution of tasks and groups have had a great deal of investment to ensure execution is intuitive and consistent across different use cases
		- Refer to to `src/lib/test/taskgroup-usage-test.coffee` for the guaranteed expectations across different scenarios
	- In earlier versions you could use `tasks.exit()` during execution to clear remaning items, stop execution, and exit, you can no longer do this, instead use the completion callback with an error, or call `tasks.clear()` then the completion callback
	- Refer to the [new public api docs](http://learn.bevry.me/taskgroup/api) for the latest usage
- Changes
	- `complete` event is now `completed`, but you really should be using the new `done` event or the promise methods
	- `run` event is now `started`
	- A lot of internal variables and methods have had their functionality changed or removed, if a method or variable is not in the [public api](http://learn.bevry.me/taskgroup/api), do not use it
	- There is now a default `error` and `completed` listener that will emit the `done` event if there are listeners for it, if there is no `done` event listeners, and an error has occured, we will throw the error
	- Tasks and groups will now only receive a default name when required, this is to prevent set names from being over-written by the default
	- Adding of tasks and groups to a group instance will now return the group instance rather than the added tasks to ensure chainability, if you want the created tasks, use `.createTask(...)` and `.createGroup(...)` instead, then add the result manually
- Introductions
	- `passed`, `failed`, `destroyed` events are new
	- Task only
		- new `timeout` option that accepts a number of milliseconds to wait before throwing an error
		- new `onError` option that defaults to `'exit'` but can also accept `'ignore'` which will ignore duplicated exit errors (useful when combined with timeout event)
	- TaskGroup only
		- new `onError` option that defaults to `'exit'` but can also accept `'ignore'` which will ignore all task errors
		- new `setNestedConfig(config)` and `setNestedTaskConfig(config)` options to set configuration for all children