docs: add version info to rewrite and regex set map

docs/changelog/main.md

@@ -43,6 +43,9 @@
 * New [regex_set_map](../reference/kumo.regex_set_map/new.md) type for efficiently
   matching multiple regular expressions in a single search operation and returning
   an associated value.
+* New
+  [smtp_client_rewrite_delivery_status](../reference/events/smtp_client_rewrite_delivery_status.md)
+  event to enable rewriting SMTP client status codes.
 
 ## Fixes
 * HTTP injection API did not expand templating in `From`, `Reply-To` or

docs/reference/events/smtp_client_rewrite_delivery_status.md

@@ -1,5 +1,7 @@
 # `kumo.on('smtp_client_rewrite_delivery_status', function(response, domain, tenant, campaign, routing_domain))`
 
+{{since('dev')}}
+
 This event is triggered by the SMTP client if a message is rejected by
 a destination SMTP server.
 

docs/reference/kumo.regex_set_map/new.md

@@ -1,5 +1,7 @@
 # `kumo.regex_set_map.new([{MAP}])`
 
+{{since('dev')}}
+
 Create a new *regex set map* from a set of key/value pairs.
 
 A regex set can efficiently match a haystack string against a list of multiple