SpamPD v2.61

[mpaperno]

Bug fixes for v2.60, new features, and some optimization. Many thanks to Simon Matter for reporting, suggestions, and testing!

* Restore syslog as default logging destination (#31)
* Fix issues with older Perl versions (#30)
~ Optimize initial header processing when building message line array in process_message().
~ Slight optimization to LMTP multi-recipient handling in process_request().
~ Optimize how rewritten (tagged) message is saved back to temp file.
+ Add detection and logging of RULESVERSION tag with SA >= v3.4.0.
+ Add tracking of some per-child runtime statistics which by default are now shown in the child process names.
+ Add ability to provide a custom child process name template string (or not modify the child name at all). Template format documented in POD. (#32)
+ Add _SPAMPDVERSION_ as a "template tag" (macro), eg. for use in SA add_header directives.

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This discussion was created from the release SpamPD v2.61.