Not really a fan of soft shadows on sprites, looks weird to me (and a few others, going by comments I've seen). An option to disable that would be welcome. Great job on the release.
Go to the game's folder, look for the "settings" file in there and open it with some text editor like Notepad. The first line of text will be "b EnableShadows True", change it to "b EnableShadows False", save the file, and then the soft shadows will be turned off.