changelog: add httpget section to 0.6.2 changelog

changelogs/0.6.2.md

@@ -2,6 +2,11 @@
 
 - Depends on `wireleap/common` v0.3.6.
 
+- Experimental `httpget` forwarder added: issues a HTTP GET request
+  through the Wireleap circuit. Feedback on failures is currently only
+  logged and not returned to the CLI, which is planned to improve in a
+  subsequent release.
+
 - Improvements to upgrade status handling code:
     - Upgrade status no longer assumed on start/stop.
     - If starting `wireleap` fails due to an upgrade being required, the
@@ -13,5 +18,5 @@
     potential rollback without having to re-setup permissions.
   - The user is no longer required to delete `wireleap_tun` manually.
 
-- custom git versions enabled by using envvar `GITVERSION` in
+- Custom git versions enabled by using envvar `GITVERSION` in
   `contrib/build-bin.sh` if already set.