* 'develop' of github.com:matrix-org/synapse: (199 commits)
Extend web_client_location to handle absolute URLs (#7006)
Add some benchmarks for LruCache (#6446)
Convert http.HTTPStatus objects to their int equivalent (#7188)
Reduce the number of calls to `resource.getrusage` (#7183)
Remove some `run_in_background` calls in replication code (#7203)
Revert "Revert "Merge pull request #7153 from matrix-org/babolivier/sso_whitelist_login_fallback""
Revert "Revert "Improve the UX of the login fallback when using SSO (#7152)""
Revert "Merge pull request #7153 from matrix-org/babolivier/sso_whitelist_login_fallback"
Revert "Improve the UX of the login fallback when using SSO (#7152)"
tweak changelog
1.12.3
Update docstring per review comments
Fix device list update stream ids going backward (#7158)
Fix the debian build in a better way. (#7212)
Fix changelog wording
1.12.2
Pin Pillow>=4.3.0,<7.1.0 to fix dep issue
1.12.1
review comment
1.12.1
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