Added a __iter__ method to the PersistenceDiagram class in python. Renamed the points iterator to the intervals iterator.
set (targets
triangle
triangle-zigzag)
set (libraries ${libraries} ${Boost_SERIALIZATION_LIBRARY})
foreach (t ${targets})
add_executable (${t} ${t}.cpp)
target_link_libraries (${t} ${libraries})
endforeach (t ${targets})