New internal notification to ensure FCModelCachedObjects expire before your app responds to FCModel change notifications
fix [FCModel databaseIsOpen]
Merge pull request #92 from ilyannn/fix-isOpen

fix [FCModel databaseIsOpen]
Fixed possible crash if that deallocs in the middle
Merge branch 'master' of github.com:marcoarment/FCModel
Moved uniqueMapInit to initialize (fix #89), made save and delete operate entirely serially in queue to prevent concurrency bugs
Allow PK with different length

`instancesWithPrimaryKeyValues:` would construct a bad query if the PK had length != 2 and we were querying for more than SQLITE_LIMIT_VARIABLE_NUMBER primary keys.
Merge pull request #95 from apalancat/bug-varlimit

Allow PK of different length on +instancesWithPrimaryKeyValues
Forgive me — I know this is dumb, but I'm trying to narrow down a bigger issue that occasionally crashes here.