Pretty big bugfix for cachedInstancesWhere... — before, it didn't work. Now it does. Guess I was the only one using that.
Exposing FCModelFieldInfo publicly (readonly), always posting public notifications on main thread, and a new warning if you have primitive-typed properties for NULL-allowing columns, since that doesn't make sense and can cause issues.
Deleting redundant legacy property.
Initial draft of no-KVO technique. Still needs custom-serialized-field integration.
Final (?) touches on KVO-less change-tracking technique to fix #42.
Merge pull request #44 from marcoarment/remove-internal-kvo

Remove internal KVO (fix #42)
Improved NSDate serialization: now stored as double, not int, for greater range and subsecond accuracy
New public closeDatabase method for certain edge cases (e.g. deleting the DB on user logout).
Fix handling of properties declared as "id" that permit NULL in DB (#46)
Merge remote-tracking branch 'upstream/master'

Conflicts:
	example/FCModelTest.xcodeproj/project.pbxproj