Updated Changelog

CHANGELOG.md

@@ -13,6 +13,7 @@
  - `go.testEnvFile`
  * The `Analysis Tools Missing` message has bee updated to only appear for the tools backing basic features of the extension
  * Skip showing linting/vetting errors on a line that has build errors. [Feature Request 600](https://github.com/Microsoft/vscode-go/issues/600)
+ * Fix the issue of slow linters resulting in stale problem markers in updated file. [Bug 1404](https://github.com/Microsoft/vscode-go/issues/1404)
  * Deprecate `go.formatOnSave` setting in favor of `editor.formatOnSave`. To disable formatting on save, add the below setting:
  ```
  "[go]": {
@@ -28,8 +29,6 @@
  - Slow format on save affects tests [Bug 786](https://github.com/Microsoft/vscode-go/issues/786)
 
 
-
-
 ## 0.6.69 - 27th November, 2017
 
 * New commands