1.2.3 - Escape characters stripped from quotes

A fix for the bug reported in #51

Commands like myapp.exe mycommand --myparam "my\ value" were having the escape character stripped, although this is not in line with behavior in other CLIs.

Commands like myapp.exe mycommand --myparam my\ value will continue to have the escape stripped by shells, as this is correct and protects the following space