add simple etreeconv test
Revert "mute the attribute_of_multi test temporarily."

This reverts commit f1a4b9aa855a0d37eb7a3d23908a427a6f74fdd9.
handle msgpack.unpackb throwing ValueError
Merge branch '2_9'
HtmlPage behavior change: It now replaces the element on assignment instead of appending the incoming value as child
add logged='len' support
minor pep8 fixes
make reconstruct_url configurable.
add encoding declaration to setup.py
whitespace.
minor
add missing name attribute to PGGeometry object.
add support for 'unique' and 'index' kwargs to sqlalchemy integration
add index type support to sqlalchemy unique/index properties.
add support for sqlalchemy's autoincrement
add PGXml, the sqlalchemy equivalent of AnyXml.
minor
fix skipping existing columns in mapping spyne classes to sqlalchemy tables when table already exists.
add non-nullable fk support to o2o relation.
re-implement integer types in order to export _{min,max}_bounds.