Support \r as line seprator within a single workout

[mgifos]

It seems that Excell enforces \r, so we'll support it in the future, till then, stick with Google Drive Spreadsheet and probably Open Office.

[mgifos]

The issue has been partially resolved, at least from the quick-plan point of view, it support CR or CRLF line endings, but the library it uses to parse CSV still has open issues related to this matter:

• New line character inside the quote #58 and
• Parser is not configurable in regard to lineTerminator despite the types saying so #97

Of course in future, we can create our own CSV file parser or finding another one that can parse CR characters even if they are contained within a quoted value without breaking the line.
The workaround for now would be to use Google Spreadsheets or LibreOffice Calc, because both editors force LF character when breaking the line within a cell. Avoid MS Excell for now.