started neighbor_iterator class implementation
cell list reset function added
added compare neighbours function
added are_neighbors function and build cell neighbor list function
implemented cell list next function
add some comments
started build atom neighbors list
added virtual destructor
added fortran cell_lists file to use as template
Merge branch 'master' of https://github.com/pele-python/pele into cell_lists
Merge branch 'cell_lists' of https://github.com/smcantab/pele into cell_lists
completed neighbor_iterator, made compilable, needs to be tested
removed static ndim
some changes to the iteration in neighbor_iterator
cleaned up cell list
Merge branch 'master' of https://github.com/pele-python/pele into cell_lists
fixed preiodic distance put_in_box
fixed some issues, still unsolved
bug fixes to cell lists and started tests