2020-01-11  Murray Cumming  <murrayc@murrayc.com>

	4.9.1

2020-01-11  Murray Cumming  <murraycu@google.com>

	Remove dependency on glibmm and don't use Glib::ustring

	For now, the API uses an xmlpp::ustring where it previously used
	Glib::ustring.

2020-01-11  Murray Cumming  <murrayc@murrayc.com>

	Change API name from libxml++-4.0 to libxml++-5.0