doc versions and git repo

[<don...@is...>]

When I went searching for how to get asdf in clisp I ran across
https://clisp.sourceforge.io/beta/impnotes/
for  CLISP version 2.49.93+

Whereas, in my git directory what I see is impnotes for
version 2.49.60+
Even though version.sh says
VERSION_NUMBER=2.49.93+
RELEASE_DATE=2018-02-18         # in "date +%F" format

Is there a beta branch, or beta repo?  Should I be using it?

Also, is there some intent (in beta code that I don't yet have)
to include asdf in clisp?  I notice in sbcl, for example,
(require "ASDF") works.
Currently it seems to me (now that I've managed to do it)
unreasonably difficult to get asdf into clisp.  
(But I think that's the fault of asdf.)