Backwards compatibility for std::unique_ptr where needed.

doc/changelog.dox

@@ -189,6 +189,15 @@ See also:
 
 @subsection changelog-latest-deprecated Deprecated APIs
 
+-   All uses of @ref std::unique_ptr in @ref Text::AbstractFont,
+    @ref Text::AbstractFontConverter and @ref Trade::AbstractImporter are
+    replaced with @ref Corrade::Containers::Pointer. The types are implicitly
+    move-convertible to each other if the
+    @ref Corrade/Containers/PointerStl.h header is included. The header is
+    included where needed if @ref MAGNUM_BUILD_DEPRECATED is enabled. To ensure
+    your code keeps with future versions of Magnum, either switch your
+    code to use @ref Corrade::Containers::Pointer as well or include the
+    @ref Corrade/Containers/PointerStl.h header explicitly.
 -   @cpp TextureTools::distanceField() @ce is deprecated due to inefficiency of
     its statelessness when doing batch processing. Use the
     @ref TextureTools::DistanceField class instead.

src/Magnum/Text/AbstractFont.h

@@ -39,6 +39,10 @@
 #include "Magnum/Text/Text.h"
 #include "Magnum/Text/visibility.h"
 
+#ifdef MAGNUM_BUILD_DEPRECATED
+#include <Corrade/Containers/PointerStl.h>
+#endif
+
 namespace Magnum { namespace Text {
 
 /**

src/Magnum/Text/AbstractFontConverter.h

@@ -37,6 +37,10 @@
 #include "Magnum/Text/Text.h"
 #include "Magnum/Text/visibility.h"
 
+#ifdef MAGNUM_BUILD_DEPRECATED
+#include <Corrade/Containers/PointerStl.h>
+#endif
+
 namespace Magnum { namespace Text {
 
 /**

src/Magnum/Trade/AbstractImporter.h

@@ -36,6 +36,10 @@
 #include "Magnum/Trade/Trade.h"
 #include "Magnum/Trade/visibility.h"
 
+#ifdef MAGNUM_BUILD_DEPRECATED
+#include <Corrade/Containers/PointerStl.h>
+#endif
+
 namespace Magnum { namespace Trade {
 
 /**