This framework refines the algorithms of Chambers and Chen in their 1999
paper, "Efficient Multiple and Predicate Dispatching", to make them suitable
for Python, while adding a few other enhancements like incremental index
building and lazy expansion of the dispatch DAG. Also, their algorithm
was designed only for class selection and true/false tests, while this
framework can be used with any kind of test, such as numeric ranges, or custom
tests such as categorization/hierarchy membership.

Authors:
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Phillip J. Eby