I just released lxml 3.3.6. This is a bug-fix-only release for the stable lxml 3.3 series that fixes a couple of crashes.
The documentation is here: http://lxml.de/
This release was built using Cython 0.20.1.
If you are interested in commercial support or customisations for the lxml package, please contact me directly.
3.3.6 (2014-08-28) ==================
Bugs fixed ----------
* Prevent tree cycle creation when adding Elements as siblings.
* LP#1361948: crash when deallocating Element siblings without parent.
* LP#1354652: crash when traversing internally loaded documents in XSLT extension functions.