Only invoke language and annotation map expansion if the value is a JSON object

See Gregg's changes in 8c546b9.

This addresses #133 and #196.

Author: lanthaler

test-suite/tests/expand-0040-in.jsonld

@@ -0,0 +1,23 @@
+{
+  "@context": {
+    "vocab": "http://example.com/vocab/",
+    "label": {
+      "@id": "vocab:label",
+      "@container": "@language"
+    },
+    "annotations": {
+      "@id": "vocab:annotation",
+      "@container": "@annotation"
+    }
+  },
+  "@id": "http://example.com/queen",
+  "label": [
+    "The Queen"
+  ],
+  "annotations":
+  [
+    "No",
+    "annotations",
+    { "@id": "asTheValueIsntAnObject" }
+  ]
+}

test-suite/tests/expand-0040-out.jsonld

@@ -0,0 +1,23 @@
+[
+  {
+    "@id": "http://example.com/queen",
+    "http://example.com/vocab/label":
+    [
+      {
+        "@value": "The Queen"
+      }
+    ],
+    "http://example.com/vocab/annotation":
+    [
+      {
+        "@value": "No"
+      },
+      {
+        "@value": "annotations"
+      },
+      {
+        "@id": "http://json-ld.org/test-suite/tests/asTheValueIsntAnObject"
+      }
+    ]
+  }
+]

test-suite/tests/expand-manifest.jsonld

@@ -201,6 +201,11 @@
       "name": "Complex property generator test case with multiple colliding IRIs (this document wouldn't roundtrip cleanly)",
       "input": "expand-0039-in.jsonld",
       "expect": "expand-0039-out.jsonld"
+    }, {
+      "@type": ["test:TestCase", "jld:ExpandTest"],
+      "name": "Only invoke language and annotation map expansion if the value is a JSON object",
+      "input": "expand-0040-in.jsonld",
+      "expect": "expand-0040-out.jsonld"
     }
   ]
 }