This is implemented now, see:


The Move Line Up and Move Line Down commands were added.
By default, these commands were assigned as CTRL + SHIFT + UP and CTRL + SHIFT + DOWN.
If these shortcut keys don’t work, please go to Configuration Properties, Keyboard tab, and click Reset, or assign your favorite shortcut keys to these commands.

Thank you, Yutaka.

Find me: transpose lines move line up move lines down switch lines