Autoloader ignored when value is set.
Made changes to the Entity `_set` and `autoloadAll` so that when data is loaded, it is not over-ridden by the autoloader.
Added Tests for the autoloader.
Merge pull request #27 from russholio/issue-26

Autoloader ignored when value is set.
Cache intial values.
Cached the default values defined for Entity Vos.
Load the cached default values for each instance of the entity.
Added test to ensure that subsequent Entities are loaded with the default values.
Merge pull request #28 from russholio/issue-22

Cache intial values.
Fix tests.
Ensure false instead of falsy is tested.
Inverse.