* Sync composer.lock/.json and Phpstan Upgrade
For some reason, a version newly cloned from master receives a complaint from composer that the lock and json files aren't in sync. So I ran composer update. The only thing that needs special attention is, as usual, Phpstan. There are an unusually large number of new differences when Phpstan is run with Php7.4 vs Php8.1. These are handled easily enough. But Reader/Xlsx seems very fragile; a change which would have eliminated one of the new errors seems to have caused Phpstan to go into a loop, as does an annotation without a code change, and, indeed, as does just about any change to that member. This bears watching, and it's a reason I will delay installing this.
* Deleting Phpstan Cache Helps
It lets me change Reader/Xlsx as I wished. Not a great resolution, but probably good enough. I will continue to think about it for a couple of days.
* Minor DocBlock Changes
Correct some PhpDocumentor problems.
oleibman
MarkBaker