Test against 2.2.0
Reset mapper to NullMapper

This allows raising exceptions upon calling any methods on it

[resolve #107]
Merge pull request #110 from joneslee85/meaningful-mapping-missing-exception

Reset mapper to NullMapper
Add Entity#update method

This allows mass-assign attributes
Merge pull request #92 from joneslee85/patch-3

Test against 2.2.0
Implement entity attribute inheritance thanks to @joneslee85
Merge branch 'master' of https://github.com/bennyklotz/model into bennyklotz-master
Merge branch 'bennyklotz-master'
Added extra test case. Ref #105
Merge pull request #111 from joneslee85/add-entity-update-api

Add Entity#update method