Version 5.0.1 - Call unref on expiring session timer

Fixes #63

Version 5.0.0 - Node min. version 4.1.0 and support sequelize operator symbols

This release updates minimal required node version to 4.1.0.
Additionally it uses now operator symbols, thanks to #59.

Version 4.1.0 - non transactional findCreateFind instead of findOrCreate

See #47, thanks to @imranbohoran.

Version 4.1.0-beta.1 - non transactional findCreateFind instead of findOrCreate

See #47, thanks to @imranbohoran.

Please test this release thoroughly to make sure we didn't miss anything.

Version 3.2.0 - fixes an update bug with extendDefaultFields

Fixes #41

Version 3.0.0 - new sequelize min. requirement

This release contains PR #29 which improves the use of promises accross the code base as well as fixes some tests. In addition, we decided to bump the Sequelize requirement to version 2.1.0 which led to the decision to create a new major version.