Fix bug with \n translation (foliojs#797)

This causes \n characters to be displayed more consistently.

Author: Mike-Koder

lib/line_wrapper.coffee

@@ -92,8 +92,8 @@ class LineWrapper extends EventEmitter
               mustShrink = w > @spaceLeft and l > 0
               mightGrow = w <= @spaceLeft and l < word.length
 
-          # send a required break unless this is the last piece
-          fbk.required = l < word.length
+          # send a required break unless this is the last piece and a linebreak is not specified
+          fbk.required = bk.required or l < word.length
           shouldContinue = fn word.slice(0, l), w, fbk, lbk
           lbk = required: false