Update 16 gave a lot of things. Even though I tried them briefly, I can definitely say that they are all good.
But there is one thing that I still want to see. An opportunity to put windows in diagonal walls. Sometimes this interferes with the creation of some maps. Example: My copy of the map of the "Haunted Cathedral" from the game Thief: Dark Project. (The copy was mostly successful, but the absence of windows on the diagonal walls still cuts my eyes. If anyone is interested, I can share a link where I drop the maps created on this program)
P.s. I apologize in advance if the words above seem strange to you due to possible grammatical, punctuation and / or semantic errors. I used Google translator to write this text, because I am not very good in English, even if I understand it relatively well.
And yes. Good luck in further development. From Russia with love.