Update database.py

Inverted logic means _release_internal will always fail on a rollback. Fixed and simplified.
Update setup.py

Bugfix version bump.
Merge pull request #102 from TkTech/patch-1

Fix _release_internal
Add more instructions for engine_kwargs, to avoid DB connection timeout issues
Merge pull request #103 from hszcg/master

Add more instructions for engine_kwargs, to avoid DB connection timeout ...
fix logo link, fixes #104
add __contains__
quickstart typo: "invocing" should be "invoking"

:)
Merge pull request #106 from AEAMcNett/patch-1

Fix Typo

Thanks to @AEAMcNett
Fixing typo in docstring for `query`

The SQLAlchemy link was pointing to a dead link.
Merge pull request #107 from aniversarioperu/patch-0

Fixing typo in docstring for `query`
fix typo
Merge pull request #108 from vaal-/patch-1

fix typo
Merge remote-tracking branch 'upstream/master'
make dataset.freeze.config compatible with python3