Log Message:
Update to 3.08, depend on libyaml.

3.08 (2008-12-31)
-----------------

* Python 3 support (Thank to Erick Tryzelaar).
* Use Cython instead of Pyrex to build LibYAML bindings.
* Refactored support for unicode and byte input/output streams.

3.07 (2008-12-29)
-----------------

* The emitter learned to use an optional indentation indicator
  for block scalar; thus scalars with leading whitespaces
  could now be represented in a literal or folded style.
* The test suite is now included in the source distribution.
  To run the tests, type 'python setup.py test'.
* Refactored the test suite: dropped unittest in favor of
  a custom test appliance.
* Fixed the path resolver in CDumper.
* Forced an explicit document end indicator when there is
  a possibility of parsing ambiguity.
* More setup.py improvements: the package should be usable
  when any combination of setuptools, Pyrex and LibYAML
  is installed.
* Windows binary packages are built against LibYAML-0.1.2.
* Minor typos and corrections (Thank to Ingy dot Net
  and Andrey Somov).

3.06 (2008-10-03)
-----------------

* setup.py checks whether LibYAML is installed and if so, builds
  and installs LibYAML bindings.  To force or disable installation
  of LibYAML bindings, use '--with-libyaml' or '--without-libyaml'
  respectively.
* The source distribution includes compiled Pyrex sources so
  building LibYAML bindings no longer requires Pyrex installed.
* 'yaml.load()' raises an exception if the input stream contains
  more than one YAML document.
* Fixed exceptions produced by LibYAML bindings.
* Fixed a dot '.' character being recognized as !!float.
* Fixed Python 2.3 compatibility issue in constructing !!timestamp values.
* Windows binary packages are built against the LibYAML stable branch.
* Added attributes 'yaml.__version__' and  'yaml.__with_libyaml__'.