+20May20=======================================================================
+1. Strip out conversion from users.v2 and v3 to new json format file into a
+ new program called convert-v3-to-v4.pl. In theory, this program *could* be
+ run at any time and is backported to mojo and master branches.
+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.