* Bitmap Decoder can now decode BitmapArray
* Add tests for bitmap metadata decoing. Fix an issue that a bitmap with a v5 header would be set in the metadata as an v4 header.
* Fixed issue with decoding bitmap arrays: color map size was not determined correctly. Added more test images.
* Refactor colormap size duplicate declaration.
* Fixed an issue, that when an unsupported bitmap is loaded the typ marker was not correctly shown in the error message