[gjs] (2 commits) ...Merge branch 'ewlsh/callback-out-args' into 'master'

From: Philip Chimento <pchimento src gnome org>
To: commits-list gnome org
Cc:
Subject: [gjs] (2 commits) ...Merge branch 'ewlsh/callback-out-args' into 'master'
Date: Fri, 24 Sep 2021 22:17:05 +0000 (UTC)

Summary of changes:

  2b70ecc... Handle optional out parameters in callbacks
  47f0f0b... Merge branch 'ewlsh/callback-out-args' into 'master'