Merge pull request #15 from treww/master

Updated after refactoring variant with using boost any.
backport small pyevent changes
fix wrong test
Merge pull request #16 from oroulet/oroulet

fix test, small event improvment
update StatusCode enum list
add LocalizedText class translation
set LocalizedText attributes r/w
Merge pull request #17 from mdcb-gmt/master
Using SetServerURI which replaced SetURI. Take path to opcua includes from prefix path.