Georss-client

* Excluded tests from package (thanks scop).
* Python 3.8 support.

* Fix handling feeds starting with byte order mark.

* Migrated Instituto Geográfico Nacional Sismología feed integration to [python-georss-ign-sismologia-client](https://github.com/exxamalte/python-georss-ign-sismologia-client)
* Migrated generic GeoRSS feed integration to [python-georss-generic-client](https://github.com/exxamalte/python-georss-generic-client)
* Migrated Western Australia Department of Fire and Emergency Services feed integration to [python-georss-wa-dfes-client](https://github.com/exxamalte/python-georss-wa-dfes-client)
* Migrated Queensland Fire and Emergency Services (QFES) Bushfire Alert feed integration to [python-georss-qfes-bushfire-alert-client](https://github.com/exxamalte/python-georss-qfes-bushfire-alert-client)
* Migrated Tasmania Fire Service Incidents feed to [python-georss-tfs-incidents-client](https://github.com/exxamalte/python-georss-tfs-incidents-client).
* Migrated INGV Centro Nazionale Terremoti (Earthquakes) feed to [python-georss-ingv-centro-nazionale-terremoti-client](https://github.com/exxamalte/python-georss-ingv-centro-nazionale-terremoti-client)
* Migrated Natural Resources Canada Earthquakes feed [python-georss-nrcan-earthquakes-client](https://github.com/exxamalte/python-georss-nrcan-earthquakes-client)
* Dropped Python 3.5 support.

* Fixed issue where the feed entries do not have any suitable timestamps.

* Simple Feed Manager for all feeds added.

* Support for Instituto Geográfico Nacional Sismología (Earthquakes) feed.