Problem:    Autoload directory missing from distribution.
Solution:   Add the autoload/zig directory to the list of distributed files.

Problem:    LGTM is soon shutting down.
Solution:   Remove LGTM from CI. (closes #11671)

Problem:    Classes are not documented or implemented yet.
Solution:   Make the first steps at documenting Vim9 objects, classes and
            interfaces.  Make initial choices for the syntax.  Add a skeleton
            implementation.  Add "public" and "this" in the command table.

Problem:    File missing from list of distributed files.
Solution:   Add logfile.pro to list of distributed files.

Problem:    It is not easy to see what client-server commands are doing.
Solution:   Add channel log messages if ch_log() is available.  Move the
            channel logging and make it available with the +eval feature.

Problem:    Various comment and indent flaws.
Solution:   Improve comments and indenting.

Problem:    Cannot easily try out what codes various keys produce.
Solution:   Add a script to gather key code information, with an initial list
            of codes to compare with.

Problem:    VisVim is outdated, does not work with current Visual Studio.
Solution:   Remove VisVim. (Martin Tournoij)

Problem:    Extra newline in messages after a verbose shell message.
Solution:   Output the newline with msg_putchar_attr(). (closes #11233)
            Make it possible to filter a screendump before comparing it.

Problem:    MS-Windows: no batch files for more recent MSVC versions.
Solution:   Add batch files for 2017, 2019 and 2022. (Ken Takata,
            closes #11184)