Version 2.9.0

Enhancements and new features:

* Add a Prometheus export module (issue #930)
* Add a Kafka export module (issue #858)
* Port in the -c URI (-c hostname:port) (issue #996)

Bugs corrected:

* On Windows --export-statsd terminates immediately and does not export (issue #1067)
* Glances v2.8.7 issues with Curses UI on Android (issue #1053)
* Fails to start, OSError in sensors_temperatures (issue #1057)
* Crashs after long time running the glances --browser (issue #1059)
* Sensor values don't refresh since psutil backend (issue #1061)

• glances-version.db Permission denied (issue #1066)