- Added a MssqlRepository

- Adapter some code to allow more flexibility for the new LDAP adapter from ulmus-ldap.
- Insert's fields are now escaped by default.
- A new RelationBuilder was added, a lot of code from the EntityTrait was moved into this. Some code from the Repository class will need to be moved there too.

src/Adapter/AdapterInterface.php

@@ -9,8 +9,9 @@ interface AdapterInterface {
     public const IDENTIFIER_TABLE = 2;
     public const IDENTIFIER_DATABASE = 3;
     public const IDENTIFIER_SCHEMA = 4;
+    public const IDENTIFIER_VALUE = 5;
     
-    public function connect() : PdoObject;
+    public function connect() : object /* | PdoObject|mixed */;
     public function buildDataSourceName() : string;
     public function setup(array $configuration) : void;
     public function escapeIdentifier(string $segment, int $type) : string;