[add] window/logMessage

samples/didopen/client.json

@@ -0,0 +1,12 @@
+{
+    "jsonrpc": "2.0",
+    "method": "textDocument/didOpen",
+    "params": {
+        "textDocument": {
+            "uri": "file:///some/file.xml",
+            "languageId": "xml",
+            "text": "<foo at=42><bar>test</bar></foo>vvvbvbvbvbvbv\nvv\n\nvcccccccccccccc\n",
+            "version": 0
+        }
+    }
+}