alright alright alright, v1.0.0 is (mostly) working, as far as I can see only the videochat feature is missing, I'll further investigate when I have the time. Other than that it seems to be looking good, changed to python3, registration including email & activation is working, url preview (which wasn't always before), introduced a new healthcheck page.
Grab it from here and let me know if you encounter any other issues. Not sure if upgrading from older versions work flawlessly, since quite a few config items got introduced and some are required. So if it doesn't work from scratch, install a fresh one on another domain and compare with your current one before upgrading.
Possible things that might need changing if you want the features (depending on the the version you first installed it) in homeserver.yaml:
add public_base_url: https://yourmatrixserver.com
change case url_preview_enabled: true
comment '172.18.0.0/12' in url_preview_ip_range_blacklist
The Riot app also got pushed to 1.2.2, available here as usual.