field single PK and UK should be mutually exclusive (#47)

adapter/0.2.8.json

@@ -0,0 +1,58 @@
+/**
+ * Copyright © 2016-2018 by IntegrIT S.A. dba Hackolade.  All rights reserved.
+ *
+ * The copyright to the computer software herein is the property of IntegrIT S.A.
+ * The software may be used and/or copied only with the written permission of
+ * IntegrIT S.A. or in accordance with the terms and conditions stipulated in
+ * the agreement/contract under which the software has been supplied.
+ *
+ * {
+ * 		"add": {
+ * 			"entity": [<names of new property>],
+ * 			"container": [<names of new property>],
+ * 			"model": [<names of new property>],
+ * 			"view": [<names of new property>],
+ *			"field": {
+ *				"<type>": [<names of new property>]
+ *			}
+ * 		},
+ * 		"delete": {
+ * 			"entity": [<names of new property>],
+ * 			"container": [<names of new property>],
+ * 			"model": [<names of new property>],
+ * 			"view": [<names of new property>],
+ *			"field": {
+ *				"<type>": [<names of new property>]
+ *			}
+ * 		},
+ * 		"modify": {
+ *	 		"entity": [
+ *	 			{
+ *					"from": { <properties that identify record> },
+ *					"to": { <properties that need to be changed> }
+ *				}
+ *			],
+ *			"container": [],
+ *			"model": [],
+ *			"view": [],
+ *			"field": []
+ * 		},
+ * }
+ */
+{
+	"add": {},
+	"modify": {
+		"field": [
+			{
+				"from": {
+					"primaryKey": true,
+					"unique": true
+				},
+				"to": {
+					"unique": false
+				}
+			}
+		]
+	},
+	"delete": {}
+}