GitLab will continue to be upgraded from 11.4.5-ce.0 on November 25th 2019 at 4.00pm (AEDT) to 5.00pm (AEDT) due to Critical Security Patch Availability. During the update, GitLab and Mattermost services will not be available.
- remove redundant parentheses
- simplify string for warning
- make _is_binary_signature protected
- remove unused imports
- fixed whitespace and capitalization in tests
Signed-off-by: Stefan Marr <firstname.lastname@example.org>