Bug if you click on the felt where the fourth (empty) base is.
Error: main.lua:339: bad argument #1 to 'unpack' (table expected, got nil) stack traceback: [love "boot.lua"]:345: in function <[love "boot.lua"]:341>
[C]: in function 'unpack'
main.lua:339: in function <main.lua:327>
[love "callbacks.lua"]:154: in function <[love "callbacks.lua"]:144>
[C]: in function 'xpcall'