Update CHANGELOG.md

Author: Rachel Macfarlane

CHANGELOG.md

@@ -20,4 +20,7 @@
 - Fix for [#383](https://github.com/Microsoft/vscode-pull-request-github/issues/383), move to github.com domain for the authentication server
 - Fix for [#498](https://github.com/Microsoft/vscode-pull-request-github/issues/498), make sure comments gets updated on refresh event
 - Fix for [#496](https://github.com/Microsoft/vscode-pull-request-github/issues/496), linkify urls on the description page
-- FIx for [#507](https://github.com/Microsoft/vscode-pull-request-github/issues/507), loosen scope restrictions for older version of GitHub Enterprise
+- FIx for [#507](https://github.com/Microsoft/vscode-pull-request-github/issues/507), loosen scope restrictions for older version of GitHub Enterprise
+
+0.1.7
+- Fix for native promise polyfill removal from VSCode extension host in Insiders 1.29