fridge has new models by jp, and now uses two nodes instead of one.
an abm has been added to convert the old one-node version into this new
two-node version. inventories are kept in the process, but I can't do
anything about fridges that are themselves in someone's inventory or
chests. If you want to keep them, place them in the world before you
update.
added coat rack on wall, and freestanding coat tree, models by jp
added doorbell, model and texture by jp with changes by me
since forever.
Also clarify it in the copyright message, spread the license file around
a bit, and remove some useless "last changed" dates since they've been
inaccurate for a long time.
package the two together as a modpack so that regular homedecor users don't
see a functional change, but others can take signs_lib and use it as a
standalone mod.
also get rid of some *~ files
