Minor fixes related to test migration

include/J3ML/LinearAlgebra/Quaternion.h

@@ -41,7 +41,7 @@ namespace J3ML::LinearAlgebra
         Quaternion(const Vector3 &rotationAxis, float rotationAngleRadians);
         Quaternion(const Vector4 &rotationAxis, float rotationAngleRadians);
 
-        explicit Quaternion(Vector4 vector4);
+        explicit Quaternion(const Vector4& vector4);
         explicit Quaternion(const EulerAngle& angle);
         explicit Quaternion(const AxisAngle& angle);
 
@@ -220,6 +220,7 @@ namespace J3ML::LinearAlgebra
 
         // Transforms the given vector by this Quaternion.
         Vector3 operator * (const Vector3& rhs) const;
+
         Vector4 operator * (const Vector4& rhs) const;
 
         // Divides a quaternion by another. Divison "a / b" results in a quaternion that rotates the orientation b to coincide with orientation of

include/J3ML/LinearAlgebra/Vector2i.hpp

@@ -0,0 +1,11 @@
+#pragma once
+
+namespace J3ML::LinearAlgebra
+{
+    class Vector2i
+    {
+    public:
+        int x;
+        int y;
+    };
+}

include/J3ML/LinearAlgebra/Vector3.h

@@ -113,6 +113,7 @@ public:
 
     static Vector3 RandomBox(RNG& rng, float min, float max);
 
+    static Vector3 RotateAroundAxis(const Vector3& vec, const Vector3& axis, const float radians);
 
     static inline Vector3 RandomGeneral(RNG& rng, float minElem, float maxElem) { return RandomBox(rng, minElem, maxElem); }
 public: