Add cane, cudgel and umbrella to applicable fencing weapons.

Cane and umbrella because they make sense as improvised fencing weapons.

Cudgel because the description specifically says it can be used for dueling practice, and its techniques (rapid, precise, parry) are identical to the rapier.

I'm pretty sure "cudgel" is actually the wrong name for this item, as a cudgel is a clubbing weapon, but that's a separate issue.