Update credits and changelog, minor cleanup.

doc/changelog.dox

@@ -53,6 +53,11 @@ See also:
     and @gl_extension{NV,fragment_shader_barycentric} desktop / ES extensions.
     These add only shading language features.
 
+@subsubsection changelog-latest-new-math Math library
+
+-   Added @ref Math::Quaternion::toEuler() and documented how to convert Euler
+    angles to a quaternion (see [mosra/magnum#397](https://github.com/mosra/magnum/pull/397))
+
 @subsubsection changelog-latest-new-platform Platform libraries
 
 -   Cursor management using @ref Platform::Sdl2Application::setCursor(),

doc/credits.dox

@@ -150,7 +150,7 @@ Are the below lists missing your name or something's wrong?
     WebGL 2 build fixes
 -   **Marco Melorio** ([\@Melix19](https://github.com/Melix19)) --- iOS test
     updates and fixes, cursor management in @ref Platform::Sdl2Application and
-    @ref Platform::GlfwApplication, doc fixes
+    @ref Platform::GlfwApplication, Math library additions and doc fixes
 -   **Max Schwarz** ([\@xqms](https://github.com/xqms)) --- `Any*` plugin
     improvements, fixes in the @ref GL library
 -   **Michael Tao** ([\@mtao](https://github.com/mtao)) --- Gentoo build fixes

src/Magnum/Math/Quaternion.h

@@ -401,14 +401,14 @@ template<class T> class Quaternion {
 
         /**
          * @brief Convert to an euler vector
+         * @m_since_latest
          *
-         * Expects that the quaternion is normalized and that the values
+         * Expects that the quaternion is normalized. Returs the angles in an
-         * are combined in ZYX order.
+         * XYZ order, you can combine them back to a quaternion like this:
-         * The returned vector of radians is in XYZ order.
-         * @see @ref rotation(), @ref DualQuaternion::rotation()
-         * To convert the euler angles back to the Quaternion you can use:
          *
          * @snippet MagnumMath.cpp Quaternion-fromEuler
+         *
+         * @see @ref rotation(), @ref DualQuaternion::rotation()
          */
         Vector3<Rad<T>> toEuler() const;
 

src/Magnum/Math/Test/QuaternionTest.cpp

@@ -559,7 +559,7 @@ void QuaternionTest::matrixNotOrthogonal() {
 }
 
 void QuaternionTest::euler() {
-    Quaternion a = Quaternion({0.35f, 0.134f, 0.37f}, 0.02f).normalized();
+    Quaternion a = Quaternion{{0.35f, 0.134f, 0.37f}, 0.02f}.normalized();
     Math::Vector3<Rad> b{1.59867_radf, -1.15100_radf, 1.85697_radf};
 
     CORRADE_COMPARE(a.toEuler(), b);
@@ -568,7 +568,7 @@ void QuaternionTest::euler() {
         Quaternion::rotation(b.y(), Vector3::yAxis())*
         Quaternion::rotation(b.x(), Vector3::xAxis()));
 
-    Quaternion a2 = Quaternion({-0.624252f, -0.331868f, -0.624468f}, 0.331983f);
+    Quaternion a2{{-0.624252f, -0.331868f, -0.624468f}, 0.331983f};
     Math::Vector3<Rad> b2{0.0_radf, -1.57045_radf, -2.16434_radf};
 
     CORRADE_COMPARE(a2.toEuler(), b2);