Fix bug with .fetch getting 1st model every time
Only save if there have been changes
Only save changed or new models
Add hasMany foreignKeys
A lot of rewrite to try & make nested models not reload
Fix bug with duplicate entries appearing
Use deep-diff for comparing objects
Only save if model is new or changed
Fetch only when using a model for a query
belongsTo should use existing relationship, not a new one
Fix annoying test dependent on ID insertion order
Bump to v0.0.7