Igrium's Replay Exporter - Экспорт реплеев в Blender

This update mainly comprised of under-the-hood changes to support: Animated Textures! You'll need to update both the mod and the addon to use these.

Changes:

• Made material properties use raw json instead of property struct in compiler
• Material property definition for animated texture data.
• Fixed slim skins not exporting properly

Note: although it's defined in the spec and exported, interpolated animated textures (prismarine, etc) are not yet supported in Blender.