Please report bugs here, on GitHub.
Please post questions on the use of pyDatalog on StackOverflow (make sure to add the logic-programming tag at the bottom of the form). I'll respond as quickly as possible.
Other questions / comments can be posted on the pyDatalog Google Groups. Feel free to subscribe to it for announcements.
Please note that it is recommended to upgrade to the latest release. Check first the change log for possible impact on your program.
If you are interested to contribute to pyDatalog, please contact me. The roadmap shows what's ahead. The latest software version is on GitHub.