actually fix up power-loss mechanics in flywheel storage.  Will revisit
in the future when upgrading to a full network graph.  Closes #158
add alternative base mc skin for use for civilian females
add default texture for bards.  Closes #160
add actual alex skin from minecraft.net -- need to rework to use for
civilian female skins
update default skin for civilian females for all pre-configured
factions.
update structures in default structure pack.  Closes #131
flip setting of load default structure pack to default=true
fix up rendering of item-slot auto-label (color/lighting)
add .75 (2.3-RC1) release
Merge branch '2.3' into 2.4