Implemented a Refining system, which is not currently useable.
You can pay to refine an item up to + 10, once it is +10, the next refine you do will increase it's grade, but the refine level goes back to 0.
You can refine up to +10 and red named grade, which is the grade on the teaser.
Also implemented an system that might help on hardmode, Pierce and Immunity.
Pierce increases by a percent the damage you cause on enemy, and Immunity decreases the damage you receive from an enemy by a percent.
I guess N Terraria 3 or 4 had that feature.
Edit:. Also, made so you can refine armors, shields and fishing rod aswell, due to my first testing i ended up with 1200% fishing power, basically ever caught a fish, had to fix obviously.
With a worm i could get 2 golden crates