Update to 0.15

Prep for One Night in Ravenloft
Add lots of magic items

src/assets/fragments/weapons/spear-properties.md

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+### Spear Properties
+
+-   **Thrown**: May be thrown and used as a ranged weapon (20' / 40' / 60').
+-   **Versatile**: At start of combat round, if offhand is free, may choose to have spear deal 1d8 base damage for that round while gaining the following properties:
+    -   **Slow**: Always attacks last in a round.
+    -   **Two-handed**: Requires two hands to use.