Merge pull request #75 from python-ellar/drop_async_session_scope

fix: Drop Async Session Scope

Merge pull request #74 from python-ellar/session_close

fix: Session Cleanup

Merge pull request #35 from python-ellar/feat_file_image_field

feat: Image and FileField support with sqlachemy-file

Added doc for activating async sqlalchemy

Merge pull request #16 from python-ellar/ellar_070_support

Ellar 0.7.0 support

Update README.md