Short update about current development status

Recently I have made some important changes to the NGinn engine and feel that it's getting close to what I'd like to achieve. Here's the list of most important changes made:

1. ProcessInstance class makeover. Most important change is that tokens no longer have an identity. At the beginning it was assumed that each token is an independent object and tracking the relation between tasks and tokens has been quite complicated. However, all tokens are the same, they don't convey information - so it was sensible to get rid of their identity. Now only numbers count - all we need to know about tokens is how many of them sit in each place. Results: 50% of code thrown away while retaining the same functionality. Performance and clarity improved.
2. Custom process state serialization. I have decided to use custom XML serialization instead of binary serialization used previously. Main reason is that binary serialization doesn't support versioning and upgrading the library breaks old version of processes. It adds some work to task implementation, but we have complete control of persistence.
3. Introduced distributed transactions (each step of process is run in a separate transaction).
   
4. Basic infractructure is working. Now I need to concentrate on details and providing complete functionality. Especially, task implementation is quite behind.
   
5. Number of examples was added to NGinn.XmlFormsWWW project. It demonstrates how to start and cancel process instances and how to handle worklist functionality (manual tasks). Simple TODO List web application is working (sort of).
   

Summing up, NGinn API is maturing and there are no heavy public interface modifications. It's time to start documenting it. I hope to use the engine in some commercial project, so this should speed things up and improve the quality. Sounds nice.