be better about tolerances
0.4.0
autocomplete group names
add docs
add ability to get links & joints that make up a group, add get_root_link(), refactor Joint::move()
produce errors when setting targets fails
add a pick demo
0.4.1
add forgotten arg
0.4.2
fixed ground command
Merge pull request #5 from ipa-mdl/groovy-devel

fixed ground command