Merge pull request #25 from matrix-org/events_refactor

graph/graph2.py

scripts/check_event_hash.py

scripts/upgrade_db_to_v0.5.5.py

setup.py

synapse/api/auth.py

synapse/api/constants.py

synapse/api/events/__init__.py

synapse/api/events/room.py

synapse/api/events/validator.py

synapse/crypto/event_signing.py

synapse/events/__init__.py

synapse/events/builder.py

synapse/events/snapshot.py

synapse/events/utils.py

synapse/events/validator.py

synapse/federation/replication.py

synapse/handlers/_base.py

synapse/handlers/directory.py

synapse/handlers/federation.py

synapse/handlers/message.py