Shadow's Complexity Swords

Happy New Year's. Here's a small update while I figure out what to include in the next major update.

• Added a bone shiv.
• Added a flint fragment. It's now used to craft stabbing arrows and bone shivs instead of regular flint. It's crafted with flint and a crude rock and doesn't get consumed by being used in a crafting recipe like normal flint.
• Added envelopes. They have four item slots and two variants; normal and sealed. The difference is only cosmetic.
• Added a new painting; "The End". It's a reference to one of my favorite games of all time.