Bump to 0.4.0 version

Author: Peng Ren

README.md

@@ -6,6 +6,7 @@
 [![codecov](https://codecov.io/gh/passren/PyMongoSQL/branch/main/graph/badge.svg?token=2CTRL80NP2)](https://codecov.io/gh/passren/PyMongoSQL)
 [![License: MIT](https://img.shields.io/badge/License-MIT-purple.svg)](https://github.com/passren/PyMongoSQL/blob/0.1.2/LICENSE)
 [![Python Version](https://img.shields.io/badge/python-3.9+-blue.svg)](https://www.python.org/downloads/)
+[![Downloads](https://static.pepy.tech/badge/pymongosql/month)](https://pepy.tech/projects/pymongosql)
 [![MongoDB](https://img.shields.io/badge/MongoDB-7.0+-green.svg)](https://www.mongodb.com/)
 [![SQLAlchemy](https://img.shields.io/badge/SQLAlchemy-1.4+_2.0+-darkgreen.svg)](https://www.sqlalchemy.org/)
 [![Superset](https://img.shields.io/badge/Apache_Superset-1.0+-blue.svg)](https://superset.apache.org/docs/6.0.0/configuration/databases)

pymongosql/__init__.py

@@ -6,7 +6,7 @@
 if TYPE_CHECKING:
     from .connection import Connection
 
-__version__: str = "0.3.4"
+__version__: str = "0.4.0"
 
 # Globals https://www.python.org/dev/peps/pep-0249/#globals
 apilevel: str = "2.0"