Tcl Meetup 2022-09-14

Topics
   * https://core.tcl-lang.org/tips/doc/trunk/tip/455.md%|%TIP #455%|% "Extensions to [vwait]" discussion (also see TIP https://core.tcl-lang.org/tips/doc/trunk/tip/434.md%|%434%|% and https://core.tcl-lang.org/tips/doc/trunk/tip/451.md%|%451%|%)