Changes

Adding the possibility to join on a sub-select
 (commit: 810f20b)

Removing IdentifierAssembler field of EntityGraphSelector because it's misleading : it should always be inflater one.
Also making EntityGraphSelector.InternalExecutor.execute(..) to be capable of handle every kind of SQLStatement.
 (commit: 095b3e8)

Introducing DatabaseCrudOperations to separate database operations from PersistenceContext even if it's the main implementation. Adding some generics around Insert, Update and Delete classes.
 (commit: 446cff0)

Prototype of native queries implementation.
 (commit: 9e05f93)

Removing tests of sort feature of native queries implementation because it's not supported by Spring Data Jdbc
 (commit: 7bd6771)

Code cleanup
 (commit: 71aa69f)

Renaming PreparedSQLWrapper to PreparedSQLAppender and StringAppenderWrapper to StringSQLAppender
 (commit: 964db05)

Code cleanup
 (commit: c29e9ec)

Code cleanup
 (commit: 57de678)

Introducing Variable to be capable of having a named placeholder in queries
 (commit: 60bded3)

Creating ExpandableSQLAppender to create dynamic queries based on named placeholders
 (commit: 9eb32ae)

Capability to define a Spring bean to override a derived query
 (commit: 46fe38c)