I've added functions for "Rotate Camera" and "Rotate Camera Over Time" in the latest release. I believe that covers everything in the high priority section except for "Rotate Player". :) I am still making some decisions on how to best define/implement that one, but I should have it ready soon.
I also added a keyboard shortcut of "H" to hide all UI elements (minimap, inventory icon, message box, etc.), which should help with taking minimal screenshots. At some point I will also add some game configuration options around these also (for example, disabling the minimap).