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)
Fixed and simplified reload-conflict code with the new change-tracking system.
Minor fixes for closeDatabase
Fixes a minor warning regarding shadowing of local variable
Adds unit test showing an issue with dates remaining flagged as changed after save
Adds a patch to check changes in dates with a given accuracy
Adds more tests for date change saving
Merge pull request #47 from iosphere/pullrequest/minorShadowWarning

Fixes a minor warning regarding shadowing of local variable
Merge pull request #49 from iosphere/pullrequest/dateSaving

Pullrequest/date saving
Fixed bug on mapping field type lowercase or mixed case schema.
Merge
Merge remote-tracking branch 'marco/master'