Graph interface to the Map::Tube.

Changes for 0.06 - 2023-11-30T19:05:50+01:00

• Fix Makefile.PL for new version of Perl and no default »use lib '.'«.
• Improve LICENSE AND COPYRIGHT section in doc.
• Move bugtracker to github.
• Remove simple comments.
• Rewrite from List::MoreUtils to List::Util.
• Update Module::Install to 1.21 version.
• Update author github username.
• Update author name.
• Update copyright years.