[Koha] 18.05.08 Release

The Koha community is proud to announce the release of Koha 18.05.08. Koha 18.05.08 is a bugfix/maintenance release. It includes 23 bugfixes. The full release notes are available at: https://koha-community.org/koha-18-05-08-released/ Debian packages will be updated within a few days. Best, Jesse and Lucas