Patch 2.5

Prestige and piety costs/rewards of dueling have been reworked to scale with the highest held title tiers of the characters. From 0 piety/prestige for unlanded characters (i.e. stomping unlanded characters does not grant prestige) to an emperor-on-emperor duel costing 250 piety/prestige to decline, while staking 500 prestige if accepted.
Significantly improved the duel interaction GUI to better inform the player of what will happen, stating who stakes what and how the staked county will be selected.
90% reduced lag (Modders beware; You may have to adjust the artifact list sizes!)

Patch 2.4

Implements updates to the GUI Modding Framework while preparing for the next Paradox patch. Should now rapidly regenerate the UI after reloading a save, with minimal performance overhead. (May take 1-2 in-game days in the worst case)

Better GUI save compatibility workaround.

2.3:
Quick workaround for the issue of GUIs not being retained when reloading a save after a full exit.

Fixed a performance issue with the sGUI calls for the artifacts.

NOTE TO MODDERS: If you want more than 100 different artifacts to show up at a time and be interactible, you have to replace "small_indices" as a datamodel with something like "medium_indices" (1000 indices) or "indices" (1 index per province in the game). Note that the bigger your datamodel, the worse performance will suffer.

Updated to use the new GUI Modding Framework from https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=2422260973 !

What this means for you: NO MORE EDITING HUD.GUI! THIS MOD IS NOW OFFICIALLY COMPATIBLE WITH EVERY OTHER MOD!

GetDummyMale creates global_var:dummy_male, which now contains every index instead of managing the index list on individual characters. This makes it much easier to read which variables a game-relevant character has, while also making it possible to pass any desired scope to and from GUI.

Other GUIs may be executed by appending on_actions to the GUI framework; read the new README for a guide on how to do it. This means you have no excuse for editing vanilla GUI files just to execute your GUI!

New features include:

MULTIPLAYER SUPPORT!
Artifact filters to manage your vast armory of artifacts!
Artifabrian perk tree for those who wish to invest in creating experimental new gadgets and repairing broken artifacts!
Dueling for prestige, for land, or for artifacts!
Hook your enemies into accepting the duels!
Specialize in dueling through the new Dueling perk tree, unlocking new stances for your duels!
Learn AI behavior patterns during duels to predict your opponent's moves and counter them!
Over 500 possible dueling outcomes, including one or both parties getting injured or killed!
Use the new Artifact Mapmode to quickly get an overview of dangerous rulers... or walking treasure troves to plunder!

Even more simplified modularity!
Show off all your artifact slots and types through the new filter system!
A new indexing system allows for the generation of arbitrary artifact-style lists with just two lines of code! (A datamodel and an itemcontext)
The system is no longer restricted to only affecting artifacts - you could easily reuse this system for spellcasting or similar effects - anything that can be stored in a list now has a convenient interactive GUI option available!
Freedom from console commands means you no longer have an excuse to not support multiplayer!
Feel free to reuse the dueling system!
A demonstration of how to make dynamic mapmodes which display lists of stuff!

(TLDR: It's been brought up-to-date with the current version of The Way of Kings. It's still an independent module, and the main Way of Kings mod is not required!)

Patch 1.11
Gift Artifacts change: Opinion bonus only applies per artifact gifted, not per interaction performed.
Artifact creation: Creating Jewelry no longer created a scepter, crown AND jewelry, but only provides one at a time at random. The randomness is weighted towards giving you artifacts you don't already own.