Update package.xml
Merge branch 'hydro_dev' of github.com:ipa320/cob_command_tools into hydro_dev
merge
Merge branch 'ipa320-indigo_dev' into indigo_dev
added dependency
Merge pull request #62 from ipa-nhg/indigo_test

added dependency
fix xml syntax
Merge pull request #64 from ipa-fxm/indigo_dev

fix xml syntax
Merge pull request #63 from ipa-nhg/indigo_dev

missed dependency
Merge pull request #61 from ipa-fmw/indigo_dev

[Indigo] Add dependency to python-pygraphviz