This page will describe changes that break some backwards compatibility. This will not necessarily affect the user program.
A context is a map where you can store named calculations or streams.
Before you could be in multiple context organized as an array of maps. This was not used.
Now you can be in a RecursiveContext that has a map and a parent RecursiveContext. This is not used yet.
Before all the stream factory methods defining the letter matching and particle matching were static and the stream was put in a global map living in the singleton RootMap.
Now this have been changed so that for these plugin filters are a RecursiveContext. All the stream factory methods now needs to know that context. This is done giving the stream factory class a RecursiveContext field and making all the factories non static.
Conceptually DigitStreamVectorizer is sub classed from StreamVectorizer the letter matching example class.
Before: StreamVectorizer is a ImageOperation that got was turned into an ImageJ plugin using a wrapper class. DigitStreamVectorizer was also a wrapper class around StreamVectorizer that got expanded as an anonymous class.
Now it is directly sub classed from the StreamVectorizer so it is both an ImageOperation and a ImageJ plugin.
