ENH: Update ModelToModelDistance from revision c418cf6b1435d2fb2add9bc6b...

...66920d9cbcb074d to ff4d106d34532ce9917119636f03f1912822e3a4

https://www.github.com/NIRALUser/3DMetricTools/compare/c418cf6b1435d2fb2add9bc6b66920d9cbcb074d%E2%80%A6ff4d106d34532ce9917119636f03f1912822e3a4