Update copyright statements in Essentials

First need to figure out which sources need to be updated: all or only changed ones? Wiki says only the changed ones. This command, when run in the project root directory, points me to the files that need updating (i.e. have been touched this year and contain a Hippo copyright statement). Due to the Git to SVN move(I guess ?), if I start the date range before January 15th, all files show up as added, not very helpful...

svn diff --summarize -r

:

| grep ^{[MA] | sed -E 's/}[MA][[:space:]]+//' | while read -r line; do [ -f $line ] && grep -l "Hippo B.V. (http://www.onehippo.com)" $line; done

It's 136 files on February 6th.