Thanks to Dean for pointing the incompatibility with CouchDB keys. This release breaks backwards compatibility by removing the two leading underscores from the special "class*__" keys.
Install / Upgrade:
The easiest path is with PyPi:
easy_install -U jsonpickle
Other installation candidates are on Google.
This release also marks a switch to Google Code's Subversion repository:
svn checkout http://jsonpickle.googlecode.com/svn/trunk/ jsonpickle
Feel free to help out or find bugs!