+06Mar23=======================================================================
+1. Fix filter error reporting, including incrementing concurrent error count
+ if there are actually any detected parse errors.
+2. Fix warnings on difft.
+3. Add the origin of any incoming SP if it is emailed to the recipient.
+04Mar23=======================================================================
+1. Fixed regression caused by too many command errors in (startup) script
+ files. This is caused by much stricter checking of commands entered both
+ by users AND scripts. If there more concurrent errors ie. greater than
+ $DXChannel::maxerrors (default 10) then that user will be disconnected.
+
+ Unfortunately this could include the $mycall (node) channel if there were
+ too many command users in the startup script. The example I looked at had
+ a load of HTML pasted into it.
+
+ For various reasons the only manifestation of this problem was that pings
+ no longer worked.
+
+ This has been fixed. I am grateful to Fulvio HB9DHG for letting me break
+ his node for an hour or so until I worked out what was going on.
03Mar23=======================================================================
1. Fix DXDebug::DXDebug not found errors in rarely used functions. This is
also an interaction with differing versions of Mojolicious. Clearly this