handles now constant terms
refactoring: should be faster and return bound
Merge pull request #186 from joergkappes/master

RINF / TRWS small bugfix
Merge pull request #187 from opengm/master

Master
Merge pull request #48 from opengm/RC-2.3

update from opengm:RC-2.3
remove unused lines
updated bruteforce to support new visitors
refactoring usage of visitors
Merge pull request #188 from joergkappes/RC-2.3

refactoring Astar
* added begin() method to visitors to support inference algorithms which
don't provide a initial valid value or bound at 
* added missing initialization of member verbose_ in TimingVisitor
updated lpcplex to support new visitors
Merge remote-tracking branch 'opengm/RC-2.3' into RC-2.3
arg return vec0s if no state is available
Merge pull request #189 from joergkappes/RC-2.3

arg return vec0s if no state is available
removed begin() method from new visitors
updated combilp to support new visitors
updated dynamicprogramming to support new visitors
Merge remote-tracking branch 'opengm/RC-2.3' into RC-2.3
updated graphcut to support new visitors
updated visitor to support gap limit