Merge pull request #55 from microsoft/joh/calls

Add "Show Call Hierarchy"

Author: jrieken

.vscode/settings.json

@@ -0,0 +1,7 @@
+{
+    "typescript.format.semicolons": "insert",
+    "editor.codeActionsOnSave": {
+        "source.fixAll": true,
+        "source.organizeImports": true
+    },
+}