Trade: TextureData constructor was not explicit for some reason.

It's a breaking change so it's listed in the changelog, but I don't
expect anybody to actually use this constructor implicitly so all fine.

doc/changelog.dox

@@ -566,6 +566,8 @@ See also:
     interfaces, which are also @cpp const @ce and can't fail. Documentation of
     each function was expanded to suggest a recommended place for potential
     error handling.
+-   @ref Trade::TextureData constructor was not @cpp explicit @ce by mistake,
+    now it is
 
 @subsection changelog-latest-documentation Documentation
 

src/Magnum/Trade/TextureData.h

@@ -64,7 +64,7 @@ class TextureData {
          * @param image                 Texture image ID
          * @param importerState         Importer-specific state
          */
-        TextureData(Type type, SamplerFilter minificationFilter, SamplerFilter magnificationFilter, SamplerMipmap mipmapFilter, Array3D<SamplerWrapping> wrapping, UnsignedInt image, const void* importerState = nullptr) noexcept: _type{type}, _minificationFilter{minificationFilter}, _magnificationFilter{magnificationFilter}, _mipmapFilter{mipmapFilter}, _wrapping{wrapping}, _image{image}, _importerState{importerState} {}
+        explicit TextureData(Type type, SamplerFilter minificationFilter, SamplerFilter magnificationFilter, SamplerMipmap mipmapFilter, Array3D<SamplerWrapping> wrapping, UnsignedInt image, const void* importerState = nullptr) noexcept: _type{type}, _minificationFilter{minificationFilter}, _magnificationFilter{magnificationFilter}, _mipmapFilter{mipmapFilter}, _wrapping{wrapping}, _image{image}, _importerState{importerState} {}
 
         /** @brief Copying is not allowed */
         TextureData(const TextureData&) = delete;