Create fixtags_ext.py based on hello_world.py template
Get the required info from the downloaded episode
Run external fixtags.py script on episode download
The user can set the path to fixtags.py in the config
Display the full path to the config key if not set
Remove unnecessary on_load() and on_unload() methods
fixtags.py: fix getting pubdate from the environment
Log returncode and stderr only when subprocess returned non-standard values
Update README about fixtags extension
No fixes for 'Software Indie'
Create fixtags extension for gPodder 3