pwn: cylindrical, unsaved modification
Merge branch 'master' of https://github.com/grisetti/g2o_frontend
Merge branch 'master' of https://github.com/grisetti/g2o_frontend
Merge branch 'master' of https://github.com/grisetti/g2o_frontend
Merge branch 'master' of https://github.com/grisetti/g2o_frontend
pwn: loop closure seems to see the light from the far