Shaders: these constructors shuld've been marked as new.

"New". I should really make a release already.

src/Magnum/Shaders/DistanceFieldVectorGL.h

@@ -272,6 +272,7 @@ template<UnsignedInt dimensions> class MAGNUM_SHADERS_EXPORT DistanceFieldVector
          *      @ref TextureTransformationUniform buffer bound with
          *      @ref bindTransformationProjectionBuffer(), @ref bindDrawBuffer()
          *      and @ref bindTextureTransformationBuffer()
+         * @m_since_latest
          *
          * If @p flags contains @ref Flag::UniformBuffers, @p materialCount and
          * @p drawCount describe the uniform buffer sizes as these are required

src/Magnum/Shaders/FlatGL.h

@@ -594,6 +594,7 @@ template<UnsignedInt dimensions> class MAGNUM_SHADERS_EXPORT FlatGL: public GL::
          *      / @ref TextureTransformationUniform buffer bound with
          *      @ref bindTransformationProjectionBuffer(), @ref bindDrawBuffer()
          *      and @ref bindTextureTransformationBuffer()
+         * @m_since_latest
          *
          * If @p flags contains @ref Flag::UniformBuffers, @p materialCount and
          * @p drawCount describe the uniform buffer sizes as these are required

src/Magnum/Shaders/MeshVisualizerGL.h

@@ -500,6 +500,7 @@ class MAGNUM_SHADERS_EXPORT MeshVisualizerGL2D: public Implementation::MeshVisua
          *      / @ref MeshVisualizerMaterialUniform buffer bound with
          *      @ref bindTransformationProjectionBuffer() and
          *      @ref bindDrawBuffer()
+         * @m_since_latest
          *
          * At least @ref Flag::Wireframe is expected to be enabled.
          *
@@ -1756,6 +1757,7 @@ class MAGNUM_SHADERS_EXPORT MeshVisualizerGL3D: public Implementation::MeshVisua
          *      @ref MeshVisualizerMaterialUniform buffer bound with
          *      @ref bindProjectionBuffer(), @ref bindTransformationBuffer()
          *      and @ref bindDrawBuffer()
+         * @m_since_latest
          *
          * At least @ref Flag::Wireframe or one of @ref Flag::TangentDirection,
          * @ref Flag::BitangentFromTangentDirection,

src/Magnum/Shaders/PhongGL.h

@@ -810,6 +810,7 @@ class MAGNUM_SHADERS_EXPORT PhongGL: public GL::AbstractShaderProgram {
          *      @ref TextureTransformationUniform buffer bound with
          *      @ref bindProjectionBuffer(), @ref bindTransformationBuffer(),
          *      @ref bindDrawBuffer() and @ref bindTextureTransformationBuffer()
+         * @m_since_latest
          *
          * If @p flags contains @ref Flag::UniformBuffers, @p lightCount,
          * @p materialCount and @p drawCount describe the uniform buffer sizes

src/Magnum/Shaders/VectorGL.h

@@ -266,6 +266,7 @@ template<UnsignedInt dimensions> class MAGNUM_SHADERS_EXPORT VectorGL: public GL
          *      @ref VectorDrawUniform / @ref TextureTransformationUniform
          *      buffer bound with @ref bindTransformationProjectionBuffer(),
          *      @ref bindDrawBuffer() and @ref bindTextureTransformationBuffer()
+         * @m_since_latest
          *
          * If @p flags contains @ref Flag::UniformBuffers, @p materialCount and
          * @p drawCount describe the uniform buffer sizes as these are required

src/Magnum/Shaders/VertexColorGL.h

@@ -257,6 +257,7 @@ template<UnsignedInt dimensions> class MAGNUM_SHADERS_EXPORT VertexColorGL: publ
          * @param drawCount     Size of a @ref TransformationProjectionUniform2D
          *      / @ref TransformationProjectionUniform3D buffer bound with
          *      @ref bindTransformationProjectionBuffer()
+         * @m_since_latest
          *
          * If @p flags contains @ref Flag::UniformBuffers, @p drawCount
          * describes the uniform buffer sizes as these are required to have a