Merge branch 'release-v0.11.1' of github.com:matrix-org/synapse

CHANGES.rst

UPGRADE.rst

jenkins.sh

synapse/__init__.py

synapse/api/auth.py

synapse/api/filtering.py

synapse/crypto/keyring.py

synapse/events/utils.py

synapse/handlers/account_data.py

synapse/handlers/auth.py

synapse/handlers/message.py

synapse/handlers/search.py

synapse/handlers/sync.py

synapse/http/matrixfederationclient.py

synapse/rest/client/v1/login.py

synapse/rest/client/v2_alpha/sync.py

synapse/rest/client/v2_alpha/tags.py

synapse/storage/prepare_database.py

synapse/storage/schema/delta/26/account_data.sql

synapse/storage/tags.py