Adapt newline characters to Cuis standard

TODO. Give a brief intro to the problem.

Problem. You are loading some code from another Smalltalk, in my case, Squeak, you try to load it into file list and you see funny ending chapters.

Solution-1. From the FileList: click on the file, move to editor (bottom half), do cmd/alr-a (select all), cmd/alt-shift-u (convert to LF), cmd/alt-s (save).