bpo-30723: IDLE -- Enhance parenmatch; add style, flash, and help (#2306)
* Add 'parens' style to highlight both opener and closer.
* Make 'default' style, which is not default, a synonym for 'opener'.
* Make time-delay work the same with all styles.
* Add help for config dialog extensions tab, including parenmatch.
* Add new tests.
Original patch by Charles Wohlganger.
diff --git a/Misc/ACKS b/Misc/ACKS
index a6d1e0f..910f819 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -1713,6 +1713,7 @@
Chris Withers
Stefan Witzel
Irek Wlizlo
+Charles Wohlganger
David Wolever
Klaus-Juergen Wolf
Dan Wolfe