+JH/18 Bug 3068: Log a warning for use of deprecated syntax in query-style
+ lookups.
+
+JH/19 Fix TLS startup. When the last expansion done before the initiation of a
+ TLS session resulted in a forced-fail, a misleading error was logged for
+ the expansino of tls_certificates. This would affect the common case of
+ that option being set (main-section options) but not having any vriable
+ parts. It could also potentially affect tls_privatekeys. The underlyding
+ coding errors go back to 4.90 but were only exposed in 4.97.
+
+JH/20 Bug 3047: A recent (somewhere between 10.34 and 10.42) version of the
+ pcre2 library starting allocating 20kB rather than 112 bytes per match
+ call, which broke the 2GB total limitation on Exim's memory management
+ when a user had over 104207 messages stored and the appendfile
+ maildir_quota_directory_regex option is in use. Release the allocated
+ memory every thosand files to avoid this.
+