Bug fix: error with Quarterstaff dmg formula

Thanks Mafe!

Added: Polefist: a fist weapon with spear's attack targeting

Updated descriptions of all corpryst weapons to show that they include defense piercing.

Added possibility for enemies to spawn with: bolas, knuckler, polefist

Added: Knucklers - combination fist/shield weapon that counts as a fist but adds some PhysEva based on your shield skill

Updated: lots of journal entries to standardize the "multi-class" weapons
- updated the damage formulas for almost all multi-class weapons by creating my own, allowing for easier reading in the file and easier tweaking in the future if balance tweaks are needed

Tweaked: some damage formulas:
- Bolas are stronger now
- Baselard has a bit more random damage
- Kama is now 75/75 dagger/axe and Sickle is now 100/50 dagger/axe
- Shortbow is now stronger with 125% damage to help makeup for it's lack of a shield and the forced close range combat -- should hopefully entice people to try a CC archer
- Longbow is now -1 power from standard bows but has had damage buff scaling with 40% PhysAtk

- lots of little text edits

Edited content

Update: Katana -- reduced the amount of scaling on damage from armor loss. Fixed so that abilities also proc eva loss.

Art: Changed Yari to use the old Shield Spear art.
Created new art for Shield Spears

Fix: Vagari -- (some?) skills were not doing damage. Fixed thanks to Mafé!

Updated: Katana
- Slight nerf in that you need to change your strategy to not be an OP killing machine:
-- Now when you attack with a katana, you generate +25% threat and lose ALL PhysEva until start of next turn

Updated: Spear Shield
- Slight buff: increased the damage scaling and removed the penalty for wearing a shield; changed +shield skill to be a flat +PhysEva (now it adds +70% of a standard shield's PhysEva)
-- you can now carry a standard shield or a blaster in your offhand, or a ranged weapon for versatility

Big thanks to @Pato for so so much quality feedback and testing!

Updated Spear shields (art & formulas):
Now deal more damage, grant bonus Shield Skill points, but the bonus is lost if you equip another shield weapon.

Updated some spawns:
Placed `blaster` and `spearshield` in the `shield loot lists` and removed them from weapons lists. If an enemy spawns with them, they will now be an offhand, instead of their only weapon, like how it is with shields and bucklers.
Additionally changed Arena Spawns to reflect this change and to change the items they spawn with to use my loot lists for grove spawns.

Updated Bucklers:
Now a lightweight skirmishing shield that works well with mages or melee chars that want a bit more dodge and adds:
+30% more PhysEva than a standard shield
+ small amount of Acc (to the buckler or your main hand weapon)
+ elemental skill for elemental versions

But: reduces PhysDef by -1 and will not work if worn with any other shields.

Added:
Blaster shield -- alternates between firing like a crossbow and attacking like a shield

Tweaked:
Katanas -- main sword damage reduced to 80% -- now the gap between a katana and a regular sword's damage should be closer unless eva is really high.

Edited content