Changes:
-Fixed the error that happens a lot
New items:
-Longsword bow
-Redstone bow
Higher arrow velocity when holding redstone if your offhand
-Burst crossbow
Vertical multishot when holding redstone in your offhand
-Redstone core
While wearing it, weapons that need redstone in your offhand will no longer need redstone
Let me know if there are any more errors or problems or if anything doesn't work