Merge branch 'release-v0.18.2' of github.com:matrix-org/synapse

.gitignore

CHANGES.rst

docs/metrics-howto.rst

res/templates/notif_mail.html

synapse/__init__.py

synapse/api/auth.py

synapse/api/ratelimiting.py

synapse/app/pusher.py

synapse/app/synctl.py

synapse/appservice/__init__.py

synapse/config/appservice.py

synapse/config/homeserver.py

synapse/config/ldap.py

synapse/config/password_auth_providers.py

synapse/config/tls.py

synapse/handlers/_base.py

synapse/handlers/appservice.py

synapse/handlers/auth.py

synapse/handlers/directory.py

synapse/handlers/message.py