Add startup logs, full uninstall guide (#609)

cspell.json

@@ -0,0 +1,9 @@
+{
+    "version": "0.2",
+    "ignorePaths": [],
+    "dictionaryDefinitions": [],
+    "dictionaries": [],
+    "words": [],
+    "ignoreWords": [],
+    "import": []
+}

docs/troubleshooting.md

@@ -49,4 +49,12 @@ These steps shouldn't be necessary for most issues, and may be difficult to exec
 
 ### Debug logs
 
-Using `Ctrl+Shift+U` to open the output view, you can select either of the AHK++ channels to see all debug logs. You're welcome to map these logs to `Output.debug` and `console.log` calls in the source code. Please include your findings if you [open a bug](https://github.com/mark-wiemer/ahkpp/issues/new/choose).
+Using `Ctrl+Shift+U` to open the output view, you can select either of the AHK++ channels to see all debug logs. You're welcome to map these logs to `Out.debug` and `console.log` calls in the source code. Please include your findings if you [open a bug](https://github.com/mark-wiemer/ahkpp/issues/new/choose).
+
+### Full uninstall and reinstall
+
+VS Code automatically caches your extensions, even when uninstalled. You can use an app called [Everything](https://www.voidtools.com/downloads/) to quickly find and delete any cached versions, or navigate to them however you like. The default cache location is `~\AppData\Roaming\Code\CachedExtensionVSIXs\mark-wiemer.vscode-autohotkey-plus-plus`, where `~` is the path to your home folder, like `C:\Users\mark`, so the absolute path would start with `C:\Users\mark\AppData\...`.
+
+After deleting these cache locations and restarting VS Code, you should be able to get a fully fresh installation from the registry. This should resolve any issues if you believe your installed extension files got corrupted.
+
+![Everything search results showing two cached versions of AHK++](../image/cached-extensions-everything.png)

src/common/out.ts

@@ -1,13 +1,15 @@
 import * as vscode from 'vscode';
 
 /** Logs messages to IDE output channel */
+// Name of this class is referenced in docs, update if changed
 export class Out {
     private static outputChannel: vscode.OutputChannel;
 
     /**
      * Logs the given value without focusing the output view.
      * Prepends all logs with `new Date().toISOString()`.
      */
+    // Name of this func is referenced in docs, update if changed
     public static debug(value: Error | string) {
         Out.log(value, false);
     }