Fix ++lone bug.
++ each |*({a/mold b/mold} $%({$& p/a} {$| p/b})) :: a or b, a default
++ gate $-(* *) :: generic mold
++ list |*(a/mold $@($~ {i/a t/(list a)})) :: nullterminated list
-++ lone |*(a/mold p/a) :: 1-tuple
+++ lone |*(a/mold {p/a}) :: 1-tuple
++ mold gate :: normalizing gate
++ pair |*({a/mold b/mold} {p/a q/b}) :: 2-tuple
++ pole |*(a/mold $@($~ {a (pole a)})) :: faceless list
