https://www.jqueryscript.net/text/compare-text-difference.html
https://www.jqueryscript.net/text/jQuery-Plugin-To-Find-The-Difference-Between-Two-Texts-picadiff.html
https://github.com/google/diff-match-patch
https://neil.fraser.name/software/diff_match_patch/demos/diff.html
https://jquery-plugins.net/jsdiff-javascript-text-differencing-implementation
http://incaseofstairs.com/jsdiff/
https://github.com/arnab/jQuery.PrettyTextDiff
http://jsfiddle.net/q7hyfev8/504/