Ben and August’s Extended Editor (BEEMOD) & BEE2
From what I can tell he is really far from 2.0, if that's what you're asking.
Think of all the things we learned
For the people who are still alive
Why do you want 1.6? Everything up to 2.0 will probably just be bug fixes, and well.. right now I don't think there are any bugs.
Think of all the things we learned
For the people who are still alive
There are indeed bugs, lol.
There are indeed bugs, lol.
you say it like there are a lot
could you list the bugs you are aware of?
HURR DURR BUG REPORT THIS MOD DOE'SNT LETS ME USE TEH BOSS FIGHT DURR
That's the big one I've found so far. 
That's the big one I've found so far.
forgot to include an auto-generating boss fight item
There are indeed bugs, lol.
you say it like there are a lot
could you list the bugs you are aware of?
The only one I can list on the top of my head is that quicksaving then reloading doesn't re-create the particle effect for the vent all the time.
sometimes when there is a draw bridges there is an error when trying to rebuild the map... no i don't place anything in the wrong place
That's the big one I've found so far.
forgot to include an auto-generating boss fight item
Box your stuff, out the front door
PARKING LOT, CAR... GOODBYE!