Trade: bump plugin interface versions due to ImageData ABI change.

There will be one more bump after switching away from PixelStorage, so
far this is just for the compressed block properties added there.

src/Magnum/Trade/AbstractImageConverter.h

@@ -1981,7 +1981,7 @@ updated interface string.
 */
 /* Silly indentation to make the string appear in pluginInterface() docs */
 #define MAGNUM_TRADE_ABSTRACTIMAGECONVERTER_PLUGIN_INTERFACE /* [interface] */ \
-"cz.mosra.magnum.Trade.AbstractImageConverter/0.3.3"
+"cz.mosra.magnum.Trade.AbstractImageConverter/0.3.4"
 /* [interface] */
 
 }}

src/Magnum/Trade/AbstractImporter.h

@@ -2646,7 +2646,7 @@ updated interface string.
 */
 /* Silly indentation to make the string appear in pluginInterface() docs */
 #define MAGNUM_TRADE_ABSTRACTIMPORTER_PLUGIN_INTERFACE /* [interface] */ \
-"cz.mosra.magnum.Trade.AbstractImporter/0.5.2"
+"cz.mosra.magnum.Trade.AbstractImporter/0.5.3"
 /* [interface] */
 
 #ifndef DOXYGEN_GENERATING_OUTPUT

src/Magnum/Trade/AbstractSceneConverter.h

@@ -2487,7 +2487,7 @@ updated interface string.
 */
 /* Silly indentation to make the string appear in pluginInterface() docs */
 #define MAGNUM_TRADE_ABSTRACTSCENECONVERTER_PLUGIN_INTERFACE /* [interface] */ \
-"cz.mosra.magnum.Trade.AbstractSceneConverter/0.2.2"
+"cz.mosra.magnum.Trade.AbstractSceneConverter/0.2.3"
 /* [interface] */
 
 }}