Release Notes 1.17.20
From The Battle for Wesnoth Wiki
Contents
New Content
Editor
The editor can now associate open maps and scenarios to a particular add-on, as well as create the basic structure for a new add-on. Additionally, the _server.pbl is now editable in the editor, which will also automatically convert any non-mainline image into a proper DataURI so that people who don't have that image can still see it in the addon-s manager.
Changes To Existing Content
Fixes
Planning mode on start preference
The preference option to have planning mode enabled immediately on starting a scenario now works again.