- update to 4.6.4:
* see http://modwsgi.readthedocs.io/en/develop/release-notes/version-4.5.19.html
* see http://modwsgi.readthedocs.io/en/develop/release-notes/version-4.5.20.html
* see http://modwsgi.readthedocs.io/en/develop/release-notes/version-4.5.21.html
* see http://modwsgi.readthedocs.io/en/develop/release-notes/version-4.5.22.html
* see http://modwsgi.readthedocs.io/en/develop/release-notes/version-4.5.23.html
* see http://modwsgi.readthedocs.io/en/develop/release-notes/version-4.5.24.html
* see http://modwsgi.readthedocs.io/en/develop/release-notes/version-4.6.0.html
* see http://modwsgi.readthedocs.io/en/develop/release-notes/version-4.6.1.html
* see http://modwsgi.readthedocs.io/en/develop/release-notes/version-4.6.2.html
* see http://modwsgi.readthedocs.io/en/develop/release-notes/version-4.6.3.html
* see http://modwsgi.readthedocs.io/en/develop/release-notes/version-4.6.4.html

- update to 4.6.5:
* When running mod_wsgi-express and serving up static files
from the document root, and the WSGI application was mounted
at a sub URL using --mount-point, the static files in the
document root outside of the mount point for the WSGI
application would no longer be accessible.
* If no system mime types file can be found, fall
back to /dev/null so that Apache can still at least
start up.
* Now possible to use mod_wsgi-express in an a zipapp
created using shiv. This entailed a special workaround
to detect when shiv was used, so that the unpacked
site-packages directory could be added to the Python
module search path for mod_wsgi-express.

- update to 4.6.4:
* see http://modwsgi.readthedocs.io/en/develop/release-notes/version-4.5.19.html