+20May20=======================================================================
+1. Strip out conversion from users.v2 and v3 to new json format file into a
+ new program called convert-users-v3-to-v4.pl. In theory, this program
+ *could* be run at any time and is backported to mojo and master branches.
+2. Replace Storable in dxqsl/QSL.pm and rename everything (except QSL.pm).
+3. Add CTY-3010 prefixes.
+19May20=======================================================================
+1. Convert all remaining commands and areas within the program that used the
+ DB_File/Storable interface to DXUsers.pm to use the (hopefully) more stable
+ JSON text file + caching interface. Here's hoping.
+2. Add branch name to startup and sh/version.
+16May20=======================================================================
+1. Crontab can now spawn_cmd('export_users') - very safely.
+15May20=======================================================================
+1, Changed the underlying storage engine from Storable to JSON. Seems to run
+ much faster! Exporting the user file with 181000 records takes ~5.1secs
+ with Storable and ~1.5secs. No more thaw() version mismatches!
+2. Completed conversion on initialisation + export
+10May20=======================================================================
+1. Added basic changes so that users *could* have multiple connections to the
+ same node if it is allowed. This is work in progress and is there to see
+ if it deals with some networking problems encountered on very high volume
+ sites which can see more than 1000 users (although the problems can occur
+ with many hundreds or by the practices of certain ISPs). More information
+ will be forthcoming if I get to the bottom of what's REALLY going on and
+ whether this is (or maybe just one part of) the solution. It won't be
+ ready for general use until then.
+2. Fixed the script import error reported by Joaquin (EA3CV?), by the simple
+ expedient of restoring the version from the master branch.
+09May20=======================================================================
+1. Show the route by which this PCxx came in progress debugging reports. In
+ some other words: the spot/wwv/wcy/ann message arrived first from this
+ connection.
+2. Improve progress WWV & WCY messages.
+3. Stop random node isolations (at least in one place)
+08May20=======================================================================
+1. Tidy up routing table
+2. Add new argument to show/version (ALL or list of regexes) that allow you
+ to see the version and build nos of all nodes on the system.
+07May20=======================================================================
+1. Revert changes made since 25Apr concerning IP address reconciliation.
+25Apr20=======================================================================
+1. Add maximum no of users on node to show/cluster.
+2. Add ability to show last n lines of debugging ring buffer.
+3. Remove redundant wpxloc.dat file.
+24Apr20=======================================================================
+1. Add 'progress' debugging for showing that stuff is happening in nologchan
+ a.k.a ringbuffer only mode.
+2. Fix grepdbg so that no regex argument simply lists the file.
+3. Add CTY-3008 prefixes.
+22Apr20=======================================================================
+1. Fix the module search path in update_sysop.pl
+2. Add latest prefixes CTY-3007
+3. Fix unset/startup command. This will only work for users' start up scripts
+ things like user_default or startup must be edited or removed by hand.
+21Apr20=======================================================================
+1. Finally fix the "actually tranmit" any output (like from 'logout' files)
+ to users before disconnecting. This also means that disconnecting nodes
+ now receive the (totally redundant, but hey) PC39 reason for disconnection.
+20Apr20=======================================================================
+1. Speed up sh/log (including chat, rcmd, ann etc) that search the system
+ log files, by removing a completely redundant subsystem and also leveraging
+ the core operating system utility 'tac', if it's available.
+19Apr20=======================================================================
+1. The long haul that is the mojo branch has started up again. It's something
+ to do during this lockdown.
+2. The problems and instabilities around running commands that worked in
+ forked processes, when used other than by normally logged in users (e.g.
+ in the local crontab), have been fixed.
+3. If a /spider/local_data/logout file is present then its contents will be
+ sent to the user on logout.
+4. Add the ability to sh/dx origin or ip (address).
+5. Retire the use of the deprecated Mojo::IOLoop::ForkCall in favour of using
+ the supported equivalent in Mojolicious 7.26 and above. Which means you
+ will need to upgrade Mojo to at least the version. The current version is
+ 8.36 and is known to work.
+10Sep19=======================================================================
+1. Improve DXSql database filtering to exclude most via <locator> type
+ reports.
+2. Add CTY-2913 prefixes + wpxloc.raw
+14Jul18=======================================================================
+1. Add CTY-2808 prefixes + wpxloc.raw
+16Jun18=======================================================================
+1. add more modes to rbn.pl
+23Jan18=======================================================================
+1. Add CTY-2802 prefixes
+27Oct17=======================================================================
+1. Get correct hostname support and privilege levels on web connects.
+26Oct17=======================================================================
+1. Start (serious) work on web interface. Make the necessary changes to allow
+ a local webserver to connect and get its own style of messages.
+11Aug17=======================================================================
+1. Add default systemd service file file
+10Aug17=======================================================================
+1. check for disconnecting flag in more places
+31Jul17=======================================================================
+1. Fixed create_usdb.pl path specifications
+2. add CTY-2708 prefixes
+12May17=======================================================================
+1. Fix sh/425 (mostly)
+2. Add CTY-2706 prefixes
+05May17=======================================================================
+1. Add CTY-2705 prefixes
+04Apr17=======================================================================
+1. Add CTY-2704 prefixes
+17Mar17=======================================================================
+1. Add latest cty.dat & wpxloc.raw
+21Feb17=======================================================================
+1. Fix sh/dx on 14050 so that it does what one expects.
+2. Add CTY-2702 prefixes
+15Feb17=======================================================================
+1. Update UPGRADE.mojo a bit
+2. Add local::lib so that it can be used for non-root installations.
+09Jan17=======================================================================
+1. Fix mojo branch clean install issues (failing to find $main::data et al)
+02Jan17=======================================================================
+1. Add CTY-2615 prefixes
+2. Add rbn.pl - an experimental rbn deduplicating spot filter.
+26Dec16=======================================================================
+1. Fix some possible routes to $myalias callsigns becoming nodes.