Update to 0.7

Update version number for next release

Hotfix about assign polyfill

Update version

Upgrade version in bower/package.json

Merge pull request marmelab#9 from marmelab/resource_model_fix

[RFR] Fix issue in resource model chaining

Merge pull request marmelab#5 from marmelab/no_closure

[RFR] Switch to a method-based exploration of entities