Update to latest version, 1.0.19 (released April 2020), as found in Fedora and EPEL 7/8.
Changes since the previous EPEL 6 version (1.0.13) can be seen here. Summary of the main changes:
colordiffrcexample colour scheme file to match
difffilecolor option, allowing more git-like coloring (separate color for header of each changed file).
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