Extended hexadecimal mode.

While in hex mode (ctrl-t h) you can output hexadecimal values.
E.g.: to send 0x0A you have to type 0A (always 2 characters).

Added option -x, --hex to start in hexadecimal mode.

Added option --newline-in-hex to interpret newline characters in hex mode.
This is disabled by default, because, in my opinion, hex stream is
fundamentally different from text, so a "new line" is meaningless in this
context.

src/print.c

@@ -29,7 +29,7 @@ char ansi_format[30];
 
 void print_hex(char c)
 {
-  if ((c == '\n') || (c == '\r'))
+  if (((c == '\n') || (c == '\r')) && option.newline_in_hex)
   {
     printf("%c", c);
   }