[geary/mainline] (2 commits) ...Merge branch 'improve-conversation-loading-performance' into 'mainline'

From: Michael Gratton <mjog src gnome org>
To: commits-list gnome org
Cc:
Subject: [geary/mainline] (2 commits) ...Merge branch 'improve-conversation-loading-performance' into 'mainline'
Date: Mon, 8 Apr 2019 00:11:55 +0000 (UTC)

Summary of changes:

  ca39992... conversation: update GUI every 10 mails
  940241b... Merge branch 'improve-conversation-loading-performance' int