Cleaner exception and reset handling
Un-publicize LoaderHelper specifics
Start the ACL fresh
Remove inheritance relationship.. more to be figured out here
Make LoaderHelpers pay attention to canceled loaders, in order to prevent them waiting infinitely and/or executing when they shouldn't
Merge outermost try/finally into inner try block
Move LoadCancelledException to top level
Add tests for LoaderHelper
Rename LoaderHelper to Forklift
Discard any new deliveries if we're quitting.