fix bug in unsubscribing
Merge branch 'master' of github.com:FreeOpcUa/freeopcua
fix instanciation of MonitoringFilter
Merge branch 'master' of github.com:FreeOpcUa/freeopcua
fix handle handling in subscribe_datachange
merge
update to variant changes
Merge pull request #48 from oroulet/master

bugfix