handle string as argument to get_node
Merge branch 'master' of https://github.com/FreeOpcUa/opcua-python
cleanup QualifiedName(name,ns)
add QualifiedName(qn)
Merge pull request #26 from oroulet/master

support string as arg to get_node
Merge branch 'master' of https://github.com/FreeOpcUa/opcua-python
update
fix ref. count in Variant converter
common 2.7 and 3.4 implementation