shiptool v0.15 has been released

Actually, all the intervening numbers have been released too, but I
didn't think it worth commenting on. The original package offered FB1+2
ship design, fleet management, and fleet record sheet printing; since then,
I've enhanced all three:

Ship design: Added "worksheet" output (so that you can demonstrate the
calculations to other people); added command-line load; changed
hull-strength presets, so that a "Weak" hull remains "Weak" even when
the total hull mass is changed; fixed a double-screen bug (in some cases
10% of ship mass is not equal to 2 x 5%); added an "auto" hull mass button
which will find the smallest ship able to contain listed components.

Fleet management: Rather than race/fleet/class, ships are now selected
by race/fleet/classification/class, where fleet and classification can
be "any". (This will get refined further.)

Fleet printing: postscript output size is smaller; submunitions now appear
correctly; large ships now occupy multiple slots on the page rather than being
scaled down.

The suite is written in Perl/Tk (easily available on most Unix systems;
downloadable from ActiveState for Windows) and includes full documentation.