REL: v2.2.3 The third bug-fix release of the v2.2 LTS series In addition to documentation and example fixes this release fixes several critical bugs: - Fix import failure on BSD systems - Fix import errors in Qt shims for PyQt5 5.11 and PyQt4 4.12 - Fix import errors if bz2 module is not in standard library - Fix overflow in _path.h - Fix infinite recursion in transform repr - Fix bug with XKCD style - Remove unsafe usage of Popen