Log Message:
Update to 5.03:

5.03     2012-09-22
   Release by Christopher J. Madsen

    [THINGS THAT MAY BREAK YOUR CODE OR TESTS]
    * as_HTML no longer indents <textarea> (Tomohiro Hosaka) (RT #70385)

    [FIXES]
    * as_trimmed_text did not accept '0' for extra_chars

    [DOCUMENTATION]
    * Explain that as_text never adds whitespace (RT #66498)
    * Explain what extra_chars can contain for as_trimmed_text.