-Will look into the position of the "Upgrade" Button
-I'll try to do the animal stun idea
-Will change the names to shutters and will include a snapping function to the windows
(Thank you for including links/references)
-Electronics: I'll do an update later that focuses on electronics only (More items + probably more new functionalities as well) so its up to you if you want to wait until then? 100% up to you (Just saying :P)
As for the first point (Screen shots) I will try to add a screen shot function ('F10' or 'F12' keys) and i'll try to have a key for screen shot with the GUI and maybe a key for screen shot without the GUI? Will see if i'm able to include this feature with 1.9.6.
Everything else will be included in the next update.
As always thank you very much for taking the time to report, I plan to add a new NPC in future updates and I might name him Noah (I will) :P
Cheers!