Bunch of generic code standard items. Will need a cleanup.

src/TrueSkill/Layers/IteratedTeamDifferencesInnerLayer.php

@@ -17,7 +17,8 @@ class IteratedTeamDifferencesInnerLayer extends TrueSkillFactorGraphLayer
         TrueSkillFactorGraph $parentGraph,
         private readonly TeamPerformancesToTeamPerformanceDifferencesLayer $TeamPerformancesToTeamPerformanceDifferencesLayer,
         private readonly TeamDifferencesComparisonLayer $TeamDifferencesComparisonLayer
-    ) {
+    )
+    {
         parent::__construct($parentGraph);
     }
 

src/TrueSkill/Layers/TeamPerformancesToTeamPerformanceDifferencesLayer.php

@@ -32,7 +32,8 @@ class TeamPerformancesToTeamPerformanceDifferencesLayer extends TrueSkillFactorG
         Variable $strongerTeam,
         Variable $weakerTeam,
         Variable $output
-    ): GaussianWeightedSumFactor {
+    ): GaussianWeightedSumFactor
+    {
         $teams = [$strongerTeam, $weakerTeam];
         $weights = [1.0, -1.0];
 

src/TrueSkill/Layers/TrueSkillFactorGraphLayer.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace DNW\Skills\TrueSkill\Layers;
 
 use DNW\Skills\FactorGraphs\FactorGraphLayer;