Prepare for v1.4.0 release

Author: rafiss

CHANGES.md

@@ -1,7 +1,9 @@
-# Version 1.3.4
+# Version 1.4.0
+Released July 29, 2021
 - Add telemetry to SQLAlchemy CockroachDB
 - Telemetry is enabled by default, set disable_cockroachdb_telemetry in create_engine's connect_args field to disable.
   - ```Example: engine = create_engine('cockroachdb://...', connect_args={"disable_cockroachdb_telemetry": True})```
+- Initial compatibility with SQLAlchemy 1.4.
 
 
 # Version 1.3.3

sqlalchemy_cockroachdb/__init__.py

@@ -1,7 +1,7 @@
 from sqlalchemy.dialects import registry as _registry
 from .transaction import run_transaction  # noqa
 
-__version__ = "1.4.0.dev0"
+__version__ = "1.4.0"
 
 _registry.register(
     "cockroachdb.psycopg2",