docs(CHANGES): Sync updates, --exit-on-error / -x, continuing on error

Author: tony

CHANGES

@@ -22,6 +22,23 @@ $ pipx install --suffix=@next 'vcspull' --pip-args '\--pre' --force
 ### What's new
 
 - Refreshed logo
+- `vcspull sync`:
+
+  - Syncing will now skip to the next repos if an error is encountered
+
+  - Learned `--exit-on-error` / `-x`
+
+    Usage:
+
+    ```console
+    $ vcspull sync --exit-on-error grako django
+    ```
+
+    Print traceback for errored repos:
+
+    ```console
+    $ vcspull --log-level DEBUG sync --exit-on-error grako django
+    ```
 
 ### Development