Weapon enhancements: Multiple default and wielded weapons, weapon slots

[davedotluebke]

Refining issue for one of the remaining checkbox goals in #33.

Creatures can have multiple default weapons (e.g. "You hit the monster with your bare hands", "You kick the monster with your feet") and can wield multiple weapons.

We will also track the weapon slots (feet, one hand, two hand) and weapon types (piercing, slashing, bludgeoning, heat, cold, acid, poison, magic, etc.)

Created branch "multiple-default-weapons" for this.

[davedotluebke]

Decided not to do this part, but to move it to a separate enhancement:

We will also track the weapon slots (feet, one hand, two hand) and weapon types (piercing, slashing, bludgeoning, heat, cold, acid, poison, magic, etc.)

and implemented the rest in fd3abd8..84d148c. Closing this issue.