store - a very simple alternative to a version control system

I use git for version control but even with gitk find
it awkward to use especially for the simple use case
of retrieving a previous version of a file (not just
viewing the diff).

So I've created `store` a simple command line program
in Tcl 9 ~900LOC which makes it easy to store one or
more files and then to store updates. The program then
makes it easy to view any previous version, diff, and
above all extract a previous version - of a file or a
copy of the entire set of files at a particular
"generation". I hope to add a GUI too.

I mention this not because I expect anyone to use it
but just to show that all the help I've asked for on
this list has been for a purpose (as well as purely
for interest).

For the curious the code is here:
https://github.com/mark-summerfield/store