Check for unnecessary new line

Signed-off-by: Niko Rosvall <niko@ideabyte.net>
Allow adding a multiline note.

Consider following:
   memo -a "Just some note
   >in multiple
   >lines"
Memo will now remove unecessary newlines from the content.

Signed-off-by: Niko Rosvall <niko@ideabyte.net>