incremental update Sun 30 Jul 2023 11:04:33 ADT

Author: codetojoy

README.md

@@ -7,6 +7,7 @@
 ### Notes
 
 * as of July 2023, these work using Bash but not Gradle or Maven
+* GitHub actions are broken, pending availability of JDK 21 
 * see branch `pre-jdk-21` for this repo using JDK 19/20
 * includes examples for virtual threads
 * includes examples for structured concurrency, which is "preview" in JDK 19