Update changelog

Author: aeisenberg

extensions/ql-vscode/CHANGELOG.md

@@ -2,6 +2,8 @@
 
 ## [UNRELEASED]
 
+- Include the full stack in error log messages to help with debugging. [#726](https://github.com/github/vscode-codeql/pull/726)
+
 ## 1.3.8 - 17 December 2020
 
 - Ensure databases are unlocked when removing them from the workspace. This will ensure that after a database is removed from VS Code, queries can be run on it from the command line without restarting the IDE. Requires CodeQL CLI 2.4.1 or later. [#681](https://github.com/github/vscode-codeql/pull/681)

extensions/ql-vscode/src/cli.ts

@@ -267,7 +267,7 @@ export class CodeQLCliServer implements Disposable {
       const argsString = args.join(' ');
       this.logger.log(`${description} using CodeQL CLI: ${argsString}...`);
       try {
-        await new Promise((resolve, reject) => {
+        await new Promise<void>((resolve, reject) => {
           // Start listening to stdout
           process.stdout.addListener('data', (newData: Buffer) => {
             stdoutBuffers.push(newData);