Change the way we register handlers for sync agent and update tests.
Added new tests for model upsert datastore.
Merge branch 'master' of bitbucket.org:cellier/hermit
Add operation sync support in model
Minor refactoring in insert operation
Add missing methods from mock_backend and improve mock_backend behavior to simulate the real backend
Refactor insert operation to avoid a catch error
Add sync support in mock backend with all unit tests
Release 0.1.17