+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.