[LyX/master] DocBook: add support for DocBookArgumentAfterMainTag.

[Richard Kimberly Heck]

On 2/17/21 4:50 PM, Thibaut Cuvelier wrote:
> commit adc7820d458244a6425f269fd98737c8d42ca18a
> Author: Thibaut Cuvelier <tcuvelier at lyx.org>
> Date:   Sun Feb 14 07:07:04 2021 +0100
>
>      DocBook: add support for DocBookArgumentAfterMainTag.

Any change to alyout means a bump in the layout format and, at least, a 
trivial layout2layout conversion. I.e., the layout files you changed 
will need to have their format number increased by one, and that entails 
the need for a conversion for the other files. (That is all because the 
existing format will not read these layout files.)

Riki