Well we are probably not gonna add support for .gif files since the format is kinda obsolete, and it is preferable to use .dds format for all textures in later versions of clausewitz.
If you want to have "gif"-animations you can use the "frameAnimatedSpriteType" to achieve this behavior.
If you want to have "gif"-animations you can use the "frameAnimatedSpriteType" to achieve this behavior.