Internal error when last cell is empty and last line is not terminated

[kosak]

Given input like this

      final String input = "A,B\n" +
                "apple,banana\n" +
                "cherry,";

Column A should read as "apple", "cherry"
and column B should read as "banana", ""
(furthermore the empty string will probably be tranlsated to null, depending on user settings)

but the lack of newline at the end of the final row makes the library throw "Logic error: uncaught short last row"

[kosak]

Fixed in #163