Merge branch 'release-4.1.0' into develop
Merge branch 'docfix-4.1.1' into develop
Merge branch 'hotfix-4.1.2' into develop
group- and app-name added to log records.
Version bumped to 4.2.0
Python 3 fix.
Changelog updated.
Documentation updated.
Merge branch 'release-4.2.0'