Revision 1683461

0.9dev: Freeze Pygments at version 1.6.

Bloodhound will not work with the next release of Pygments, Pygments 2.0 or later, until Trac 1.0.2 is merged into the codebase.

Reference: https://groups.google.com/d/msg/trac-users/dQTG3qAWb4c/aUaSsydV_ogJ