Merge branch 'release-v1.0.0' of github.com:matrix-org/synapse into develop

CHANGES.md

MANIFEST.in

changelog.d/5415.bugfix

synapse/__init__.py

synapse/config/key.py

synapse/crypto/context_factory.py

synapse/crypto/keyring.py

synapse/python_dependencies.py

tests/http/__init__.py

tests/http/ca.crt

tests/http/ca.key

tests/http/federation/test_matrix_federation_agent.py

tests/http/server.key

tests/http/server.pem