Add a method
  Stream<String> lines()
to BufferedReader. Candidate spec follows.

    /**
     * Returns a <code>{@link Stream}</code> describing lines read from this <code>BufferedReader</code>.
     * The <code>Stream</code> is lazily populated via calls to <code>{@link readLine()}</code>. Multiple
     * calls to <code>lines()</code> on a given <code>BufferedReader</code> will result in returning the
     * same <code>Stream</code> object.
     *
     * If an <code>IOException</code> is thrown when accessing the underlying <code>BufferedReader</code>, it
     * is wrapped in an <code>{@link UncheckedIOException}</code> which will be thrown from the <code>Stream</code>
     * method that caused the read to take place.
     *
     * @return a <code>Stream&lt;String&gt;</code> containing the lines of text described by this <code>BufferedReader</code>
     */