Added documentation for the python classes Point and PersistenceDiagram. Removed the __sub__ method for PersistenceDiagram. Minor renaming.
Renamed BottleneckDistance to bottleneck_distance.
Renamed intervals iterator for PersistenceDiagram to points. Seems in better conformance with usage.
set (targets
poincare)
foreach (t ${targets})
add_executable (${t} ${t}.cpp)
target_link_libraries (${t} ${libraries} ${Boost_PROGRAM_OPTIONS_LIBRARY})
endforeach (t ${targets})