+22May99=======================================================================
+1. added check for -1 from Date::Parse and return undef for out of range dates
+2. added show/files and type commands
+21May99=======================================================================
+1. made set/nodx work again.
+2. made dx stuff queue nicely again.
+18May99=======================================================================
+1. Added announce dup checking.
+2. Added system announce filtering.
+08May99=======================================================================
+1. Added a bit more checking to the rcmd thing to make more sure that this
+rcmd isn't coming from an imposter. Not possible to prevent everything
+ofcourse, just make it a bit harder.
+2. altered set/lockout and set/privilege so that they can't executed remotely.
+3. Added some code to reject rubbish (with invalid binary characters) protocol
+or user lines as input.
+4. prevented PC command being executed remotely :-)
+05May99=======================================================================
+1. change the connection overlap from an abort to a disconnect.
+02May99=======================================================================
+1. Added the mechanism for doing user spot filtering for spots in the cluster
+(no user control just yet - but sysops can do it).
+2. Fixed problem with nodes sending out the node lists of isolated nodes.
+30Apr99=======================================================================
+1. Try to make it even more AK1A friendly by putting the node list out in the
+'correct' order.
+2. added code so that local users and commands go to all connected nodes
+INCLUDING the isolated ones.
+26Apr99=======================================================================
+1. added set/user command as a hack, please use this with care, there is
+very little checking.
+2. added export_opernam.pl which is a basic reader of AK1A opernam.dat files
+to stdout
+25Apr99=======================================================================
+1. Fixed problem with filtered spots not coming out.
+2. Added the possibility of filtering on channel callsign
+20Apr99=======================================================================
+1. altered order of undefing and closing of user file in an attempt to make
+corruptions/missing users less likely.
+2. made messages that are addressed to the node call appear to the alias call
+3. check dates much more rigourously.
+4. ignore SIGTERM and SIGINT during shutdown of the cluster
+15Mar99=======================================================================
+1. added $actiondata to filter line to allow per action data such as no of hops
+2. fixed a silly problem in talk for non-existant callsigns
+3. Added sysop command
+02Mar99========================================================================
+1. Changed DXUser so that it uses a homemade import/export hash routine
+2. DXUser now uses a DB_BTREE file
+3. Added export_users.pl, import_users.pl and convert_users.pl
+25Feb99========================================================================
+1. added NL language stuff.
+2. added set/language
+21Feb99========================================================================
+1. Allowed multiple 'on <freq>' for show/dx
+2. Made sure the 'on 20m/ssb' thing worked (also 'on hf/cw').
+3. first cut of the Filtering code, no user commands yet but the file
+format is defined and manually added filters should work for spots
+17Feb99========================================================================
+1. added export_user.pl to export user files (for interest and safety)
+2. changed DXUser::init to allow O_RDONLY access which may limit the number
+of coredumps G0RDI seems to get.
+15Feb99========================================================================
+1. Added msg forwarding code which uses $main::root/msg/forward.pl.
+14Feb99========================================================================
+1. Changed A & K in WWV to be the other way around (I am told by G3IOR that
+this will mean that we won't have pole to pole aurora nor all the power lines
+overloading everywhere as well as a result of having values of K > 10).
+2. allow the '~' character in message bodies.
+3. Moved $main::data/badmsg.pl to $main::root/msg/badmsg.pl.
11Feb99========================================================================
1. Fixed a problem with isolated nodes' configurations being sent on sending
local configs to new connections.
loop as fast as their little legs can paddle, soaking up CPU time).
2. Implemented read receipts as an especial request from G4PDQ.
3. Fiddled with DXUser a bit to see whether I can stop it core dumping on new
-users in PC16s on his machine.
+users in PC16s on G0RDI's machine.
4. Added E4 (Palestine) to Prefix data.
30Jan99========================================================================
1. Some of the dates we get can cause crashes, tried to make it more robust (oh
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