Those settings still exist but the Unity client doesn't support them. If you want to use them, you'll have to create the game with Flash (the old Warlight interface can be accessed if you click on your username in the top menu bar and select "Switch to Flash").
For the banked boot settings, I asked Fizzer during one of his streams and he said that he didn't like how banked boot time had initially been implemented so he left it out of the Unity interface with plans to rework it and hopefully put it back in later on. So for now our only option for using banked boot time is creating the games (or templates) in Flash.
As for what else has changed, it depends on how long ago you'd played originally. I think the biggest change of the past couple years has been making the "One Army Stands Guard" setting optional (so now you no longer need 1 army on every territory- you can attack/transfer with all armies you have every turn). You should probably just look at the Blog (https://www.warzone.com/blog/
) for any updates between when now and whenever you originally played Warlight.
Edited 3/21/2018 18:43:37