- renamed function calls "ColorizeImage" to "ColorizeImageCopy" and "ColorizePixmap" to "ColorizePixmapCopy"
- renamed "TFontManager" to "TBitmapFontManager" and "GetFontManager()" to "GetBitmapFontManager()"
- added GetBitmapFont()-Getter
- added Bitmapfont-loader (<bitmapfont> and <bitmapfonts>)