#332 basisproject: Fix update of template version.
#360 Add basisproject upgrade subcommand parser.
#360 Align parameter documentation of diff3 module.
#360 Minor basisproject improvements. Allow template argument to be relative to template installation prefix.
Merge remote-tracking branch 'github/develop' into feature/#360-basisproject-upgrade
#360 Update basisproject commands in documentation.
Merge remote-tracking branch 'github/feature/#360-basisproject-upgrade' into develop