0.9.6.9:

0.9.6.9:
	Oops. Misunderstood the code, and introduced a bug into the
        UTF-8 resync handling.

        * Fix the code to implement the intended behaviour as explained
          by Christophe on #lisp: fill the buffer up to the first
          invalid sequence, only signal an error if the first code
          sequence read is invalid. (<0.9.6.6 never filled the buffer,
          0.9.6.6 looped infinitely instead of signaling an error
          99.8% of the time).
        * Add tests. One of which fails; it seems to me that the
          force-eof restart has never worked properly.