Making sure that the sent time and version headers gets populated at all
times. #1910
Updated the version. This will be automatic from 4.4 onwards. Relates to https://github.com/Particular/NServiceBus/issues/1910
Merge branch 'hotfix-4.3.3'
Fixes #4321
Fixes #4321
Merge branch 'hotfix-4.3.3'