The latest version of Atlantis Word Processor supports floating images:
https://www.atlantiswordprocessor.co.../4_0_0_000.htm
The floating pictures (except those with the "Top and bottom" wrapping style) from the source document get saved to eBooks either left- or right-aligned (depending on their position on the document pages) with text wrapping around. Pictures with the "Top and bottom" wrapping style get saved either left-, center- or right-aligned with no text wrapping on both sides.