Proc::Async works on the JVM

But only since June 2017: https://github.com/rakudo/rakudo/blob/master/docs/announce/2017.06.md

Author: JJ

doc/Type/Proc/Async.pod6

@@ -8,9 +8,6 @@
 class Proc::Async {}
 =end code
 
-B<Note:> only the MoarVM backend of Rakudo implements C<Proc::Async> at
-the moment.
-
 C<Proc::Async> allows you to run external commands asynchronously,
 capturing standard output and error handles, and optionally write to its
 standard input.