Eliminate warnings when creating the Immutable class of a BaseEntity sub-subclass
Move ConfigurationError into PersistenceService and fix PersistenceService::Configuration#find_in
Rename LTI test fixtures to prevent conflict with CTI fixtures
Started implementation of CTI. create_tables now works correctly.
Implemented fetch_by_id and fetch_all in CTI
Merge branch 'master' of https://github.com/nandosola/dilithium-rb into #40

Conflicts:
	lib/persistence/mapper.rb
Merge branch 'master' of https://github.com/nandosola/dilithium-rb into #40
More work on CTI
Replace multiple queries with a single join in find_by_id
Implemented CTI
Moved PersistenceService configuration to its own file
Merge pull request #45 from mcamou/#40

Class table inheritance: closes #40