I updated Tiamat today. The changes are relatively small for the UI, but I had a few backend issues to address as well. I added auto save and a "select tile after placement" options. Both are managed through a settings windows.

The "select tile after placement" option is straightforward. The auto save feature will save your currently opened map periodically to a map called AUTO SAVE.

I wanted to make an adjustable tile palette size, but it proved to problematic for a number of reasons. So I moving on to other items and will revisit it later (i.e. multi tile selection).