The ability to restart any floor is now available in the Options menu. Simply click the option, then exist the menu to reset the floor. This will come in handy if you get stuck or lose too much health.
Happy Playing!
MAJOR UPADTE (1-26-18): FLOOR RESET CAPABILITY!
Build and release context
Steam update times within 24 hours of this post. Matching dates do not confirm which build it describes.
Build 2473085 · public branch
Steam updated · First observed