treat unicode line and paragraph seperators as newlines

it seems that is the standard behaviour now
this will also enable to send formulas over the ProB parser
repl in a single line, using 8232 as line seperator

Signed-off-by: Michael Leuschel <leuschel@uni-duesseldorf.de>

src/main/java/org/sablecc/sablecc/lexer/Lexer.java

@@ -87,6 +87,8 @@ public class Lexer
           }
           break;
         case 13:
+        case 8232: // Unicode line separator
+        case 8233: // Unicode paragraph separator
           line++;
           pos = 0;
           cr = true;