Really nice so far but some glaring bugs after you play for a little, I suspect they'll soon be fixed though but I'll mention them here just in case:
Sometimes people get stuck at the edges of buildings when they are close to the "entry" point e.g. the granary and the armoury in my case. Rebuilding fixed the problem as long as the worker was then reassigned to something else.
The weapons buildings... I twice had this happen with each of the fletcher, the polearm maker and the armourer; the worker, I discovered after I demolished the building, was stuck in the building itself, possibly trying to reach the centre but not quite getting there? They succeeded without issue unless a building was placed below and to the right of theirs, this time with one space between buildings... buildings newly placed in a bad position would work the first time but then the worker would get stuck after delivering the first item and going back to make the second.
I don't know if it happens with building spaced further apart but if I want to fit all my important, expensive weaponsmiths in my castle space is not going to happen and there should be more warning of this issue at least... personally I don't think it should be an issue at all but I'm guessing it is something to do with geometry? I also discovered that bakeries and windmill can't have their front-left side blocked by another building or else they don't work as workers enter (and queue in the case of the windmill) on that side...
Just my tu'penny worth :)
Keep up the good work :D