You can clone with
adding __getstate__ for pickle Link objects
Typo in the urlfilter datatypes
Adding the UrlFilter type as well
Adding the SearchEngine datatype.
Removed doble indentation from datatypes.py
Making all quotes consistent. The mixing of single and double quoting…
… was driving me insane.
Last fixes for README.rst
More formatting fixes, this should be proper now.
Fixing formatting errors in the restructured text readme.