Update renderers and notebooks to use new API

Author: DonJayamanne

.vscode/launch.json

@@ -12,7 +12,7 @@
             "smartStep": true,
             "sourceMaps": true,
             "outFiles": ["${workspaceFolder}/out/**/*", "!${workspaceFolder}/**/node_modules**/*"],
-            "preLaunchTask": "Compile",
+            // "preLaunchTask": "Compile",
             "skipFiles": ["<node_internals>/**"],
             "env": {
                 // Enable this to turn on redux logging during debugging

package-lock.json

@@ -28,7 +28,7 @@
         "theme": "dark"
     },
     "engines": {
-        "vscode": "^1.48.0"
+        "vscode": "^1.49.0"
     },
     "keywords": [
         "python",

package.json

@@ -677,6 +677,8 @@ export namespace notebook {
         provider: NotebookKernelProvider
     ): Disposable;
 
+    export function registerNotebookKernel(id: string, selectors: GlobPattern[], kernel: NotebookKernel): Disposable;
+
     export const onDidOpenNotebookDocument: Event<NotebookDocument>;
     export const onDidCloseNotebookDocument: Event<NotebookDocument>;
     export const onDidSaveNotebookDocument: Event<NotebookDocument>;