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This library extends the compdata package with advanced recursion
schemes derived from tree automata. These recursion schemes allow
for a higher degree of modularity and make it possible to apply
fusion. See Modular Tree Automata (Mathematics of Program
Construction, 263-299, 2012,
http://dx.doi.org/10.1007/978-3-642-31113-0_14) and
Programming Macro Tree Transducers (Workshop on Generic Programming, 61-72,
2013, http://dx.doi.org/10.1145/2502488.2502489).