0.8.3

A patch release for item types, found by the weekly API drift check.

Fixes

• Recipe items: the Item type now fits recipes, in Retail, Classic and WoW: Forever (#15, #16).
  • The preview is its own exported type, ItemPreview. The new ItemRecipe type holds a recipe's crafted item, reagents and reagents_display_string.
  • Added requirements.skill (profession and skill level), description on the item and its preview, and recipe.
  • preview_item.binding and preview_item.requirements.level are optional, because recipes have neither. Code compiled with strict null checks may need to handle undefined.

Full changelog: 0.8.2...0.8.3