# Major features
* Array type support for PostgreSQL and SQLite
* isinstance() support in queries
* Support of queries based on collections: select(x for x in y.items)
# Other features
* Support of Entity.select(**kwargs)
* Support of SKIP LOCKED option in 'SELECT ... FOR UPDATE'
* New function make_proxy(obj) to make cros-db_session proxy objects
* Specify ON DELETE CASCADE/SET NULL in foreign keys
* Support of LIMIT in `SELECT FROM (SELECT ...)` type of queries
* Support for negative JSON array indexes in SQLite
# Improvements
* Improved query prefetching: use fewer number of SQL queries
* Memory optimization: deduplication of values recieved from the database in the same session
* increase DBAPIProvider.max_params_count value
# Bugfixes
* #405: breaking change with cx_Oracle 7.0: DML RETURNING now returns a list
* #380: db_session should work with async functions
* #385: test fails with python3.6
* #386: release unlocked lock error in SQLite
* #390: TypeError: writable buffers are not hashable
* #398: add auto coversion of numpy numeric types
* #404: GAE local run detection
* Fix Flask compatibility: add support of LocalProxy object
* db_session(sql_debug=True) should log SQL commands also during db_session.__exit__()
* Fix duplicated table join in FROM clause
* Fix accessing global variables from hybrid methods and properties
* Fix m2m collection loading bug
* Fix composite index bug: stackoverflow.com/questions/53147694
* Fix MyEntity[obj.get_pk()] if pk is composite
* MySQL group_concat_max_len option set to max of 32bit platforms to avoid truncation
* Show all attribute options in show(Entity) call
* For nested db_session retry option should be ignored
* Fix py_json_unwrap
* Other minor fixes
