Pin httpgd 0.1.6

0.1.7 doesn't pass npm pretest

Author: randy3k

.vscode/settings.json

@@ -9,6 +9,6 @@
     "typescript.tsdk": "./node_modules/typescript/lib", // we want to use the TS server from our node_modules folder to control its version
     "r.lsp.diagnostics": true,
     "editor.codeActionsOnSave": {
-        "source.fixAll.markdownlint": true
+        "source.fixAll.markdownlint": "explicit"
     }
 }