implemented new visitors
implemented new visitors
implemented new visitors
working on new vistors (icm works)
Merge pull request #18 from opengm/RC-2.3

from RC-2.3 to my master
test for new visitors
working on new vistors (icm works)
working on new vistors (icm works)
working on new vistors (icm works)
Merge pull request #181 from DerThorsten/master

first working version of new visitors