e.g. a 0.4.17[.x] server is enough to run everything normally, but a
0.4.16 or older client doesn't call on_rightclick if the node also has a
formspec set, which leaves minislots.player_last_machine_def unset/nil and
crashes the server.
If the server or singleplayer is 0.4.16 or older, a crash expected due to
newer functions that are used; this cannot be fixed (and it doesn't need to
be anyway :-P ).
Forgot to make the height the same as on the 3-reel machine, since the
5-reel machine's reels are the same height as those. Makes the actual
boxes look square like they should be.
Misc. documentation fixups.
Vanessa Dannenberg