v1.17.12

What's Changed

• Fix minor issues by @ktf in #867
• Cleanup python2 by @ktf in #868
• Drop support for python2 by @ktf in #869
• Remove most Python 2 references by @singiamtel in #871
• Add --only-deps option for caching by @ktf in #870
• Add --only-deps option for caching by @singiamtel in #873
• Add assertions about spec / recipe validity. by @ktf in #874
• Fix search plugin by @singiamtel in #876
• Add templating example by @ktf in #877
• Fix typo on CVMFS upload function by @singiamtel in #878
• Delete old Jenkins file by @singiamtel in #879
• Allow definying classes of equivalence for system tools by @ktf in #875

Full Changelog: v1.17.11...v1.17.12