+WHAT'S NEW in version 1.1.0 (2013-11-26)
+ Show comment(s) before the root element.
+
+WHAT'S NEW in version 1.0.0 (2013-11-23)
+ With lxml.etree-based implementation show only child namespaces
+ (calculated as combined namespaces minus parent's namespaces).
+
+WHAT'S NEW in version 0.6.0 (2013-11-22)
+ Refactored _list() and attrs2text() to be completely generic.
+
+WHAT'S NEW in version 0.5.0 (2013-11-19)
+ Added lxml.etree-based implementation.
+
+WHAT'S NEW in version 0.4.0 (2013-11-19)
+ Added ElementTree-based implementation.
+