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.
Merge commit '11f181d27056e4c7c32edfa0106466da19051ab4'

* commit '11f181d27056e4c7c32edfa0106466da19051ab4':
  Forgive me — I know this is dumb, but I'm trying to narrow down a bigger issue that occasionally crashes here.
  Allow PK with different length
  Moved uniqueMapInit to initialize (fix #89), made save and delete operate entirely serially in queue to prevent concurrency bugs
  Fixed possible crash if that deallocs in the middle